Favus is lichen ruber, also known as Parkinson's disease or cowpox. It is characterized by the appearance of brown papules on the skin and mucous membranes, which over time transform into round reddish papules with a central depression. Favus is caused by a fungal infection that develops in the hair and epidermis and then spreads to the surface of the skin.
Favus is one of the most common skin diseases affecting people of all age groups. According to domestic dermatologists, it occurs in every 5th patient. Men are affected ten times more often than women.
One of the most