Linear and whorled nevoid hypermelanosis is a rare skin condition characterized by the presence of brown or grayish-brown patches that follow a linear or whorled pattern. It typically appears at birth or during early childhood and affects both males and females equally. The exact prevalence of this condition is unknown, but it is considered to be extremely rare. The patches usually persist throughout life but do not cause any significant health problems. Diagnosis is based on clinical examination, and treatment is generally not required as the condition is benign and cosmetic in nature.
Linear and whorled nevoid hypermelanosis (LWNH) is a rare skin condition characterized by the presence of hyperpigmented streaks or swirls on the skin. It typically appears at birth or in early childhood and affects both males and females equally. The exact prevalence of LWNH is unknown, but it is considered to be a rare condition.
LWNH is believed to be a benign condition with no associated health risks. The hyperpigmented patches are usually brown or grayish-brown in color and can vary in size and shape. They commonly occur on the trunk, limbs, and face, following a linear or whorled pattern.
While the cause of LWNH is not fully understood, it is thought to be due to an abnormal migration or proliferation of melanocytes during embryonic development. The condition is typically sporadic, meaning it occurs randomly without a family history.
Diagnosis of LWNH is based on clinical examination and characteristic appearance of the skin lesions. Treatment is generally not necessary as LWNH is a cosmetic concern rather than a medical problem. However, individuals with LWNH should be monitored for any changes in the skin or development of associated symptoms.