Linear and whorled nevoid hypermelanosis
Linear and whorled nevoid hypermelanosis (pronunciation: li-ne-ar and whor-led ne-void hy-per-me-la-no-sis) is a rare, benign skin condition characterized by the presence of hyperpigmented macules and patches arranged in a linear or whorled pattern. The condition is usually present at birth or appears in early childhood.
Etymology
The term "Linear and whorled nevoid hypermelanosis" is derived from the Latin linearis meaning "pertaining to a line", nevoid from the Greek nevoeides meaning "resembling a mole", and hypermelanosis from the Greek hyper meaning "over" and melas meaning "black".
Symptoms
The primary symptom of Linear and whorled nevoid hypermelanosis is the presence of hyperpigmented macules and patches on the skin. These patches are usually brown to black in color and are arranged in a linear or whorled pattern. The patches are typically present at birth or appear in early childhood. The condition is usually asymptomatic, meaning it does not cause any discomfort or other symptoms.
Causes
The exact cause of Linear and whorled nevoid hypermelanosis is unknown. However, it is believed to be a mosaicism condition, which means it is caused by a mutation that occurs after fertilization and affects only some cells in the body.
Diagnosis
Diagnosis of Linear and whorled nevoid hypermelanosis is typically made based on the characteristic appearance of the skin. In some cases, a skin biopsy may be performed to confirm the diagnosis.
Treatment
There is currently no cure for Linear and whorled nevoid hypermelanosis. Treatment is typically focused on managing any associated symptoms and may include the use of topical creams or laser therapy to lighten the hyperpigmented areas.
See also
External links
- Medical encyclopedia article on Linear and whorled nevoid hypermelanosis
- Wikipedia's article - Linear and whorled nevoid hypermelanosis
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