Riehl melanosis
Riehl Melanosis
Riehl Melanosis (pronounced: ree-uhl mel-uh-noh-sis) is a type of hyperpigmentation that primarily affects the face and neck. It was first described by the Austrian dermatologist Hans Riehl in 1917.
Etymology
The term "Riehl Melanosis" is named after Hans Riehl, who first described the condition. "Melanosis" is derived from the Greek word "melas", meaning black, and "-osis", a suffix often used in medical terminology to indicate an increase or abnormal condition.
Definition
Riehl Melanosis is a form of melanosis characterized by brown to gray-brown patches on the face and neck. It is often associated with exposure to certain chemicals or substances, including fragrances and cosmetics, which can cause an allergic or irritant reaction leading to hyperpigmentation.
Symptoms
The primary symptom of Riehl Melanosis is the appearance of brown to gray-brown patches on the face and neck. These patches may be accompanied by mild itching or burning sensation.
Causes
Riehl Melanosis is thought to be caused by an allergic or irritant reaction to certain chemicals or substances. These can include fragrances, cosmetics, and certain types of plants. The exact mechanism of how these substances cause hyperpigmentation is not fully understood.
Treatment
Treatment for Riehl Melanosis typically involves avoiding the substances that cause the reaction. Topical treatments, such as hydroquinone, azelaic acid, and retinoids, may also be used to lighten the hyperpigmentation. In some cases, laser therapy may be recommended.
Related Terms
External links
- Medical encyclopedia article on Riehl melanosis
- Wikipedia's article - Riehl melanosis
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