Bacterial, fungal, viral, or parasitic infections affecting the skin.
Medical records that document the extent of your skin lesions are central to establishing the right rating level. Records showing the percentage of your total body surface or exposed areas affected — measured at examinations over the past 12 months — directly address the area-based thresholds at each level.
Treatment records are equally important. Prescription records, clinic notes, and pharmacy histories can show whether you required systemic therapy (such as oral corticosteroids, biologics, retinoids, or other immunosuppressive drugs) and for how long. For the 60% level, records should reflect constant or near-constant systemic therapy across the past year. For the 30% level, they should show systemic therapy totaling 6 or more weeks. For the 10% level, they should show systemic therapy totaling less than 6 weeks. For the 0% level, records should show only topical treatments were used.
Statements from you or people who know you — describing how open sores, lesions, or treatment side effects affect your work, sleep, or daily activities — can support the overall picture when paired with clinical findings. If your condition has caused scarring or disfigurement of the head, face, or neck, those findings may be relevant to how VA evaluates the predominant disability.
Conditions that are often caused or made worse by this one. If you have any of these, they may be claimable as secondary service connection.