Riehl melanosis is a form of contact dermatitis, beginning with pruritus, erythema, and pigmentation that gradually spreads which, after reaching a certain extent, becomes stationary. The pathogenesis of Riehl melanosis is believed to be sun...
Melanosis is a form of hyperpigmentation associated with increased melanin.
Albinism is a congenital condition characterized in humans by the partial or complete absence of pigment in the skin, hair and eyes. Albinism is associated with a number of vision defects, such as photophobia, nystagmus, and amblyopia. The visual...
Melasma (also known as chloasma faciei or the mask of pregnancy when it occurs in pregnant women) is a common skin disorder characterized by tan, brown, or grayish hyperpigmented patches, usually on the face. The exact cause of melasma is not fully...
Many skin conditions affect the human integumentary system—the organ system covering the entire surface of the body and composed of skin, hair, nails, and related muscles and glands. The major function of this system is as a barrier against the...
Gustav Riehl (10 February 1855, in Wiener Neustadt – 7 January 1943, in Vienna) was an Austrian dermatologist. From 1872 he studied medicine at the University of Vienna, where he later worked as an assistant in the clinic of skin diseases and...
Phylloid hypomelanosis is a cutaneous condition, a syndrome occurring in patients with mosaic trisomy 13 or translocation trisomy 13.
Progressive macular hypomelanosis is a common skin condition, a disorder, observed more frequently in young women with darkly pigmented skin who originate from or reside in tropical climates. An interesting property of the skin condition is that it...