Nevus of Ota

 

  • Definition

Nevus of Ota is a type of pigmented birthmark that is usually present at birth or appears during early childhood. It is caused by an excess of melanin, which gives the affected areas a bluish-gray pigmentation. The pigmentation can extend to the forehead, temple, and cheek on the same side as the affected eye. In some cases, the pigmentation may also affect the other eye and surrounding areas of the face.

  • Symptoms

The most common symptom of Nevus of Ota is bluish-gray pigmentation on the skin around the eye. The pigmentation may be present at birth or appear during early childhood. It can also appear during adolescence or early adulthood. The pigmentation is usually bilateral, affecting both eyes, but it can be unilateral, affecting only one eye.

In addition to pigmentation, people with Nevus of Ota may experience other symptoms, including sensitivity to light, blurred vision, and increased tearing. These symptoms are usually mild and do not affect vision significantly.

  • Signs

The most prominent sign of Nevus of Ota is bluish-gray pigmentation on the skin around the eye. The pigmentation can be unilateral or bilateral and is usually present at birth or appears during early childhood. In some cases, the pigmentation may be more extensive and affect the forehead, temple, and cheek on the same side as the affected eye.

Other signs of Nevus of Ota include the presence of pigmented lesions on the conjunctiva, sclera, and iris. These lesions are usually benign, but they can sometimes lead to complications such as glaucoma, cataracts, or vision loss.

  • Clinical Features

Nevus of Ota is characterized by bluish-gray pigmentation on the skin around the eye. The pigmentation is caused by an excess of melanin, which gives the affected areas a bluish-gray color. The pigmentation can extend to the forehead, temple, and cheek on the same side as the affected eye.

In addition to pigmentation, people with Nevus of Ota may experience other clinical features, including the presence of pigmented lesions on the conjunctiva, sclera, and iris. These lesions are usually benign, but they can sometimes lead to complications such as glaucoma, cataracts, or vision loss.

  • Diagnosis

The diagnosis of Nevus of Ota is usually made based on clinical examination and the presence of bluish-gray pigmentation on the skin around the eye. The doctor may also perform additional tests to assess the severity of the condition and rule out other possible causes of pigmentation.

  • Treatment

The treatment of Nevus of Ota depends on the severity of the condition and the individual’s preferences. In some cases, people may choose to leave the birthmark untreated if it is not causing any discomfort or affecting vision. However, regular monitoring is still recommended to detect any changes in size, shape, or colour.

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