Neurological Conditions
Overview of VA Neurological Ratings
Neurological conditions affect the brain, spinal cord, and nerves throughout the body. Military service can lead to neurological conditions through traumatic injuries, exposure to toxins, or the physical demands of service. This section explains how the VA rates neurological conditions and provides detailed guidance for the most common conditions.
General Rating Principles for Neurological Conditions
The VA rates neurological conditions based on several factors:
- Severity of symptoms: How severely the condition affects your functioning
- Frequency of symptoms: How often symptoms occur
- Duration of symptoms: How long symptoms last when they occur
- Impact on daily activities: How the condition affects your ability to work and perform daily tasks
- Response to treatment: How well the condition responds to medication or other treatments
Objective Evidence
While some neurological conditions can be confirmed with objective tests (like MRIs, CT scans, or nerve conduction studies), others rely heavily on your reported symptoms. For conditions without clear objective markers, detailed documentation of symptoms and their impact is crucial.
Traumatic Brain Injury (TBI)
Traumatic Brain Injury (TBI) occurs when a sudden trauma causes damage to the brain. In military settings, TBI commonly results from blast exposures, vehicle accidents, falls, or combat injuries. TBI can range from mild (concussion) to severe and may cause a wide range of physical, cognitive, emotional, and behavioral effects.
Establishing Service Connection for TBI
To establish service connection for TBI, you need:
- Diagnosis of TBI by a qualified medical professional
- Evidence of an in-service event that could cause TBI (blast exposure, fall, accident, etc.)
- Medical nexus linking your current TBI symptoms to the in-service event
Combat Presumption
If you served in combat and report experiencing a head injury or blast exposure during combat, your testimony alone may be sufficient to establish the in-service event, even without medical documentation from your service period.
VA Rating System for TBI
The VA uses a unique and complex system to rate TBI under Diagnostic Code 8045. This system evaluates TBI across three main areas:
- Cognitive impairment: Memory, attention, concentration, executive functions
- Emotional/behavioral dysfunction: Psychiatric symptoms
- Physical symptoms: Headaches, seizures, balance problems, etc.
Each area is rated separately, and the highest rating among the three becomes your TBI rating.
Cognitive Impairment Rating Scale
Cognitive impairment is rated on a scale from 0 to 3 across 10 facets:
- Memory, attention, concentration, executive functions
- Judgment
- Social interaction
- Orientation
- Motor activity
- Visual spatial orientation
- Subjective symptoms
- Neurobehavioral effects
- Communication
- Consciousness
The total score determines your rating:
- 0 = 0% rating
- 1 = 10% rating
- 2 = 40% rating
- 3 = 70% rating
- Total = 100% rating
Separate Ratings
Some TBI symptoms may be rated separately under other diagnostic codes. For example, headaches may be rated under the migraine code (8100), and psychiatric symptoms may be rated under the appropriate mental health code if they can be separated from cognitive symptoms.
Evidence Needed for TBI Claims
To support your TBI claim, gather the following evidence:
- Medical Evidence:
- Diagnosis of TBI from a qualified provider
- Neuropsychological testing results
- Imaging studies (CT, MRI)
- Treatment records
- Medical opinions linking your TBI to service
- Service Records:
- Documentation of head injury, blast exposure, accident, or fall
- Combat records if claiming combat presumption
- Line of Duty determinations
- Lay Evidence:
- Personal statements describing the injury and symptoms
- Buddy statements from witnesses to the injury or symptoms
- Statements from family members about changes in behavior or functioning
Tips for Successful TBI Claims
- Get a Proper Diagnosis: Ensure your TBI is diagnosed by a qualified provider, preferably a neurologist or neuropsychologist.
- Document All Symptoms: TBI can affect many aspects of functioning; document all cognitive, emotional, and physical symptoms.
- Consider Secondary Conditions: TBI can cause or aggravate other conditions like headaches, sleep disorders, or mental health issues.
- Attend C&P Exams: The TBI exam is complex; be prepared to discuss all symptoms and their impact on your life.
- Request a Specialist: If possible, request that your C&P exam be conducted by a neurologist or neuropsychologist familiar with TBI.
Migraine Headaches
Migraine headaches are a common neurological condition characterized by severe, often debilitating headaches that may be accompanied by nausea, vomiting, and sensitivity to light and sound. Military service can trigger or worsen migraines due to stress, sleep disruption, environmental exposures, or head injuries.
Overview of Migraine Headaches
Migraine symptoms typically include:
- Moderate to severe head pain, often throbbing or pulsating
- Pain that worsens with physical activity
- Nausea or vomiting
- Sensitivity to light (photophobia) and sound (phonophobia)
- Visual disturbances or aura before the headache (in some cases)
- Attacks lasting 4-72 hours if untreated
Establishing Service Connection for Migraines
To establish service connection, you need:
- Current Diagnosis: A diagnosis of migraine headaches
- In-Service Event: Evidence of headaches beginning in service, or an event that could cause migraines (head injury, stress, environmental exposures)
- Medical Nexus: A link between your current migraines and your military service
Migraines can also be service-connected as secondary to other conditions like TBI, neck injuries, PTSD, or tinnitus.
VA Disability Ratings for Migraines
Migraines are rated under Diagnostic Code 8100 based on frequency, severity, and economic impact:
| Rating | Criteria |
|---|---|
| 50% | Very frequent completely prostrating and prolonged attacks productive of severe economic inadaptability |
| 30% | Characteristic prostrating attacks occurring on average once a month over the last several months |
| 10% | Characteristic prostrating attacks averaging one in 2 months over the last several months |
| 0% | Less frequent attacks |
Key Terms Explained
Prostrating: Causing extreme exhaustion, powerlessness, or incapacitation. For VA purposes, this generally means you must lie down and are unable to work or function during the attack.
Severe Economic Inadaptability: Does not require complete inability to work, but rather that migraines cause significant interference with work. Missing several days of work per month due to migraines may qualify.
Evidence Needed for Migraine Claims
Gather the following evidence:
- Medical Evidence:
- Diagnosis of migraines from a medical provider
- Treatment records showing frequency and severity of attacks
- Medications prescribed for migraines
- Medical opinions linking migraines to service
- Service Records:
- Documentation of headaches or migraines during service
- Records of events that could cause migraines (head injury, etc.)
- Lay Evidence:
- Personal migraine log or diary tracking frequency, duration, and severity
- Statements describing how migraines affect your ability to work and function
- Statements from family, friends, or coworkers who have witnessed your migraine attacks
- Employment records showing missed work due to migraines
Tips for Successful Migraine Claims
- Keep a Detailed Migraine Log: Document frequency, duration, severity, symptoms, and impact on activities.
- Explain “Prostrating”: Clearly describe how your migraines force you to stop activities and lie down in a dark, quiet room.
- Document Work Impact: Keep records of work absences, reduced productivity, or accommodations needed due to migraines.
- Consider Secondary Service Connection: If you have service-connected TBI, neck injury, PTSD, or other conditions that could cause migraines, pursue secondary service connection.
- Be Specific About Symptoms: Describe all symptoms (pain, nausea, light/sound sensitivity) to distinguish migraines from ordinary headaches.
BVA Appeals Resource
For veterans appealing migraine denials to the Board of Veterans’ Appeals, see our comprehensive BVA Migraine Appeals Guide analyzing 226 decisions with a 93.4% success rate and 8 proven winning patterns from actual Board decisions.
Peripheral Neuropathy
Peripheral neuropathy is a condition resulting from damage to the peripheral nerves, which transmit information between the central nervous system (brain and spinal cord) and the rest of the body. This damage can cause pain, numbness, tingling, and weakness in the affected areas, most commonly the hands and feet.
Overview of Peripheral Neuropathy
Symptoms of peripheral neuropathy typically include:
- Numbness or tingling in the hands or feet, often described as a “pins and needles” sensation
- Sharp, jabbing, throbbing, freezing, or burning pain
- Extreme sensitivity to touch
- Muscle weakness or lack of coordination
- Feeling as if you’re wearing gloves or socks when you’re not
In veterans, peripheral neuropathy can result from:
- Toxic exposures (Agent Orange, burn pits, chemicals)
- Physical injuries or trauma
- Repetitive motion injuries
- Cold injuries (frostbite)
- Diabetes (which may itself be service-connected)
- Nutritional deficiencies during service
Establishing Service Connection for Peripheral Neuropathy
To establish service connection, you need:
- Current Diagnosis: A diagnosis of peripheral neuropathy, preferably confirmed by nerve conduction studies or EMG
- In-Service Event: Evidence of an injury, exposure, or condition during service that could cause nerve damage
- Medical Nexus: A link between your current peripheral neuropathy and your military service
Presumptive Service Connection
Early-onset peripheral neuropathy is presumptively service-connected for veterans exposed to Agent Orange if it appeared within one year of exposure to a degree of at least 10% disabling.
Additionally, peripheral neuropathy secondary to service-connected diabetes is common and generally easier to establish.
VA Disability Ratings for Peripheral Neuropathy
Peripheral neuropathy is rated based on the affected nerve(s) and the severity of symptoms. The VA uses diagnostic codes 8510-8730 for various peripheral nerve conditions.
Ratings are categorized as:
- Complete Paralysis: Highest rating for the affected nerve
- Incomplete Paralysis:
- Severe: Generally 30-70% depending on the nerve
- Moderate: Generally 10-40% depending on the nerve
- Mild: Generally 0-20% depending on the nerve
Common examples include:
| Sciatic Nerve (8520) | |
|---|---|
| Severity | Rating |
| Complete Paralysis | 80% |
| Incomplete Paralysis – Severe | 60% |
| Incomplete Paralysis – Moderate | 20% |
| Incomplete Paralysis – Mild | 10% |
| Median Nerve (8515) – Affects Hand/Fingers | ||
|---|---|---|
| Severity | Major Hand | Minor Hand |
| Complete Paralysis | 70% | 60% |
| Incomplete Paralysis – Severe | 50% | 40% |
| Incomplete Paralysis – Moderate | 30% | 20% |
| Incomplete Paralysis – Mild | 10% | 10% |
Bilateral Factor
If you have peripheral neuropathy affecting both arms or both legs, the bilateral factor applies, increasing your combined rating.
Evidence Needed for Peripheral Neuropathy Claims
Gather the following evidence:
- Medical Evidence:
- Diagnosis of peripheral neuropathy
- Nerve conduction studies or EMG results
- Treatment records
- Medical opinions linking your neuropathy to service
- Service Records:
- Documentation of injuries, exposures, or conditions that could cause neuropathy
- Deployment records (for Agent Orange or burn pit exposure)
- Lay Evidence:
- Personal statements describing symptoms and their impact on daily activities
- Statements from others who have observed your symptoms
Tips for Successful Peripheral Neuropathy Claims
- Get Objective Testing: Nerve conduction studies and EMG tests provide objective evidence of nerve damage.
- Be Specific About Symptoms: Clearly describe the location, type, and severity of symptoms (numbness, tingling, pain, weakness).
- Document Functional Impact: Explain how neuropathy affects your ability to work, perform daily activities, and maintain balance or dexterity.
- Consider All Affected Nerves: You may receive separate ratings for different affected nerves.
- Explore Secondary Connection: If you have service-connected diabetes, back conditions, or other conditions that can cause neuropathy, pursue secondary service connection.
Sciatica
Sciatica is a specific type of nerve pain caused by irritation or compression of the sciatic nerve, which runs from the lower back through the hips and buttocks and down each leg. It’s a common condition among veterans, often resulting from back injuries, herniated discs, or other spine conditions.
Overview of Sciatica
Symptoms of sciatica typically include:
- Pain that radiates from the lower back through the buttock and down the leg
- Pain ranging from mild aching to sharp, burning, or excruciating
- Numbness, tingling, or muscle weakness in the affected leg or foot
- Pain that worsens with prolonged sitting, coughing, or sneezing
- Pain in one side (unilateral) more commonly than both sides (bilateral)
Establishing Service Connection for Sciatica
To establish service connection, you need:
- Current Diagnosis: A diagnosis of sciatica or radiculopathy affecting the sciatic nerve
- In-Service Event: Evidence of a back injury, strain, or condition during service that could cause sciatic nerve compression
- Medical Nexus: A link between your current sciatica and your military service
Secondary Service Connection
Sciatica is often secondary to service-connected back conditions like degenerative disc disease, herniated discs, or lumbar strain. If you have a service-connected back condition, you may qualify for secondary service connection for sciatica.
VA Disability Ratings for Sciatica
Sciatica is rated under Diagnostic Code 8520 for the sciatic nerve:
| Rating | Criteria |
|---|---|
| 80% | Complete paralysis: foot dangles and drops, no active movement of muscles below the knee, flexion of the knee weakened or lost |
| 60% | Incomplete paralysis: Severe, with marked muscular atrophy |
| 40% | Incomplete paralysis: Moderately severe |
| 20% | Incomplete paralysis: Moderate |
| 10% | Incomplete paralysis: Mild |
Separate Ratings
You can receive separate ratings for a back condition and sciatica because they involve different symptoms and functional limitations. For example, you might have a 20% rating for a lumbar spine condition and a 20% rating for moderate sciatica.
Evidence Needed for Sciatica Claims
Gather the following evidence:
- Medical Evidence:
- Diagnosis of sciatica or radiculopathy
- MRI or CT scan showing nerve compression
- EMG or nerve conduction studies
- Treatment records
- Medical opinions linking your sciatica to service or a service-connected condition
- Service Records:
- Documentation of back injuries or complaints during service
- Records of physically demanding duties that could cause back problems
- Lay Evidence:
- Personal statements describing the pain, its location, and how it affects your mobility and daily activities
- Statements from others who have observed your limitations
Tips for Successful Sciatica Claims
- Be Specific About Pain Radiation: Clearly describe how the pain radiates from your back down your leg, which is the hallmark of sciatica.
- Document Functional Limitations: Explain how sciatica affects your ability to sit, stand, walk, drive, or work.
- Get Imaging Studies: MRIs can show nerve compression and strengthen your claim.
- Consider Secondary Connection: If you have a service-connected back condition, pursue secondary service connection for sciatica.
- Track Flare-Ups: Document the frequency, duration, and severity of flare-ups, as sciatica often fluctuates in intensity.
Seizure Disorder
Seizure disorders, including epilepsy, are neurological conditions characterized by abnormal electrical activity in the brain that can cause changes in behavior, movements, feelings, and levels of consciousness. Veterans may develop seizure disorders due to traumatic brain injuries, toxic exposures, or other service-related factors.
Overview of Seizure Disorders
Seizures can vary widely in type and severity:
- Generalized Tonic-Clonic (Grand Mal): Involve loss of consciousness, muscle rigidity, and convulsions
- Absence (Petit Mal): Brief lapses in awareness, often with staring
- Focal (Partial): Affect one part of the brain and may cause altered awareness or unusual sensations
- Psychomotor: Involve automatic movements and altered consciousness
Establishing Service Connection for Seizure Disorders
To establish service connection, you need:
- Current Diagnosis: A diagnosis of a seizure disorder or epilepsy
- In-Service Event: Evidence of head injury, toxic exposure, or other event that could cause seizures
- Medical Nexus: A link between your current seizure disorder and your military service
Presumptive Period
Epilepsy that manifests to a compensable degree (at least 10%) within one year of discharge may be presumptively service-connected, even without evidence of epilepsy during service.
VA Disability Ratings for Seizure Disorders
Seizure disorders are rated under Diagnostic Codes 8910-8914, depending on the type. The rating criteria are similar for all types and based on frequency and severity:
| Rating | Criteria |
|---|---|
| 100% | Averaging at least 1 major seizure per month over the last year |
| 80% | Averaging at least 1 major seizure in 3 months over the last year; or more than 10 minor seizures weekly |
| 60% | Averaging at least 1 major seizure in 4 months over the last year; or 9-10 minor seizures per week |
| 40% | At least 1 major seizure in the last 6 months or 2 in the last year; or averaging at least 5-8 minor seizures weekly |
| 20% | At least 1 major seizure in the last 2 years; or at least 2 minor seizures in the last 6 months |
| 10% | Confirmed diagnosis of epilepsy with a history of seizures |
Major vs. Minor Seizures
Major seizures (grand mal) involve loss of consciousness and convulsions.
Minor seizures (petit mal) involve brief interruptions in consciousness, often with staring spells or subtle symptoms.
Evidence Needed for Seizure Disorder Claims
Gather the following evidence:
- Medical Evidence:
- Diagnosis of a seizure disorder
- EEG results
- Neurological evaluations
- Treatment records showing medications and their effectiveness
- Medical opinions linking your seizure disorder to service
- Service Records:
- Documentation of head injuries, toxic exposures, or other potential causes
- Any in-service seizure episodes
- Lay Evidence:
- Seizure log documenting frequency, duration, and type of seizures
- Statements from witnesses who have observed your seizures
- Description of how seizures and medication side effects impact your daily life and ability to work
Tips for Successful Seizure Disorder Claims
- Keep a Detailed Seizure Log: Document every seizure, including date, time, duration, symptoms, and recovery period.
- Get Witness Statements: Since you may be unconscious during seizures, statements from witnesses are valuable evidence.
- Document Medication Side Effects: Anti-seizure medications can cause significant side effects that may impact your functioning.
- Address Safety Concerns: Explain how seizures affect your ability to drive, work with machinery, or perform other activities safely.
- Consider Secondary Connection: If you have service-connected TBI, pursue secondary service connection for seizures.
Multiple Sclerosis
Multiple Sclerosis (MS) is a chronic, often disabling disease that attacks the central nervous system, causing inflammation, damage to the myelin sheath (the protective covering of nerves), and disruption of nerve impulses. While the exact cause is unknown, MS can develop or be triggered during military service.
Overview of Multiple Sclerosis
MS symptoms vary widely and may include:
- Fatigue
- Difficulty walking
- Numbness or tingling
- Muscle weakness or spasms
- Vision problems
- Dizziness and coordination problems
- Cognitive changes
- Bladder and bowel dysfunction
MS typically follows one of several patterns:
- Relapsing-Remitting MS (RRMS): Clearly defined attacks followed by partial or complete recovery
- Secondary Progressive MS (SPMS): Initially relapsing-remitting, followed by a steady progression
- Primary Progressive MS (PPMS): Steady worsening of symptoms from onset, without relapses
Establishing Service Connection for Multiple Sclerosis
To establish service connection, you need:
- Current Diagnosis: A confirmed diagnosis of MS
- Service Connection: Evidence that MS began during service or within the presumptive period
Extended Presumptive Period
MS has an extended presumptive period of 7 years after discharge. If MS is diagnosed and manifests to a compensable degree (at least 10%) within 7 years of leaving service, it is presumed to be service-connected without requiring direct evidence of onset during service.
VA Disability Ratings for Multiple Sclerosis
MS is initially rated at a minimum of 30% under Diagnostic Code 8018. However, the VA will evaluate each symptom or manifestation of MS separately and combine the ratings if this results in a higher overall rating.
Common MS symptoms rated separately include:
- Weakness or paralysis in limbs
- Vision problems
- Speech difficulties
- Bladder or bowel dysfunction
- Cognitive impairment
- Depression or other mental health issues
Rating Strategy
For MS, it’s often advantageous to have each symptom rated separately rather than accepting the minimum 30% rating. This “separate avenues” approach can result in a much higher combined rating.
Evidence Needed for Multiple Sclerosis Claims
Gather the following evidence:
- Medical Evidence:
- Diagnosis of MS from a neurologist
- MRI results showing lesions
- Lumbar puncture (spinal tap) results
- Treatment records
- Documentation of all symptoms and their severity
- Service Records:
- Any in-service symptoms that could have been early signs of MS
- Medical records from within the 7-year presumptive period
- Lay Evidence:
- Personal statements describing the onset and progression of symptoms
- Statements from family members or friends about observed changes
- Description of how MS affects your daily activities and ability to work
Tips for Successful Multiple Sclerosis Claims
- Document Early Symptoms: MS often begins with subtle symptoms years before diagnosis; document any early signs during or shortly after service.
- Get a Comprehensive Evaluation: Ensure all MS symptoms are documented and evaluated for separate ratings.
- Consider Special Monthly Compensation: If MS causes loss of use of limbs or requires regular aid and attendance, you may qualify for additional compensation.
- Address Invisible Symptoms: Fatigue and cognitive issues are common but less visible MS symptoms; ensure these are well-documented.
- Track Flare-Ups: MS often involves periods of exacerbation; document these carefully.
Other Neurological Conditions
The VA recognizes and provides disability compensation for many other neurological conditions not covered in detail in this section. These include:
- Parkinson’s Disease: A progressive nervous system disorder affecting movement
- Amyotrophic Lateral Sclerosis (ALS): A progressive disease affecting nerve cells that control voluntary muscles
- Huntington’s Disease: A hereditary condition causing progressive breakdown of nerve cells in the brain
- Myasthenia Gravis: A neuromuscular disorder causing weakness in skeletal muscles
- Guillain-Barré Syndrome: A rare disorder where the immune system attacks the nerves
- Trigeminal Neuralgia: Severe facial pain due to trigeminal nerve dysfunction
- Bell’s Palsy: Temporary facial weakness or paralysis
- Vertigo and Balance Disorders: Conditions affecting equilibrium and spatial orientation
The general principles for service connection and rating apply to these conditions as well. If you have a neurological condition not specifically covered in this guide, consult with a Veterans Service Officer (VSO) or accredited representative for assistance with your claim.