Floral lichen planus, also known as sweat patches, is a mild, usually asymptomatic, chronic fungal infection of the stratum corneum of the skin.
The lesions have furfuraceous scales and are hypopigmented or hyperpigmented. The diagnosis is confirmed by direct microscopic examination of the lesions to see typical lichen planus mycelium.
Oral ketoconazole treatment is appropriate for extensive lichen planus.
Expanded information;
The lesions are most commonly found on the chest, back, arms, and neck. Others are on the face, abdomen, buttocks, armpits, groin, scalp, and occiput.
It often worsens in summer and fall, and decreases or subsides in winter.
Starts as tiny spots. Patients are often not aware of it, and it gradually becomes a corn, soybean to broad bean size round or round-like spots.
The edges are clear, level with the skin or slightly elevated. The surface is covered with very thin, furfuraceous scales and is shiny, especially when viewed sideways in the light, and the surface of the lesion is highly reflective.
New lesions are dark, gray, yellow, brown, hazel, or tan.
Old lesions are pale and whitish.
When the old and new lesions coexist, the black and white color is intermixed in the form of blotches, which is quite characteristic and typical of lichen planus.
When the scales are removed or when the lesions are healed, there is a temporary hypopigmentation spot, and patients are often mistaken for vitiligo and come to the doctor.