A chronic autoimmune condition causing scaly, disk-shaped patches on sun-exposed skin.
Because the rating turns on lesion coverage and treatment history, the most useful evidence directly documents both of those things over the past 12 months.
Medical records showing the extent of your lesions — including dermatology notes, photographs, or body-surface-area measurements — help establish whether coverage falls below 5%, between 5 and 20%, between 20 and 40%, or above 40% of your entire body or exposed areas. Records that identify which areas are exposed skin versus covered skin can also matter.
Treatment records are equally important. Prescription records, pharmacy printouts, or physician notes showing what systemic therapies you received — corticosteroids, biologics, retinoids, phototherapy, PUVA, or other immunosuppressive drugs — and for how long help show whether your treatment was constant or near-constant, lasted 6 weeks or more, lasted less than 6 weeks, or was limited to topical therapy only. If lesions have caused scarring or disfigurement on your head, face, or neck, records and photographs documenting that can support evaluation under the scar or disfigurement diagnostic codes. Statements from you or people who know you describing how your symptoms affect daily activities can round out the picture.
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.
