Lichen planus tropicus.
D000293:Adolescent; D000328:Adult; D002648:Child; D004534:Egypt; D004781:Environmental Exposure; D005260:Female; D006358:Hot Temperature / Q000009:adverse effects; D006801:Humans; D008010:Lichen Planus / Q000453:epidemiology / Q000473:pathology*; D008297:Male; D008875:Middle Aged; D013472:Sunlight; D014466:Ultraviolet Rays / Q000009:adverse effects