How is mole of Ota caused at birth

summary

Nevus of Ota is also known as nevus fuscocerus of the upper palate, melanocytosis of the dermis, melanosis of the skin, melanocytosis of the mucous membrane and skin. Nevus of Ota is a gray blue macular lesion of the skin that affects the sclera, conjunctiva and ipsilateral facial trigeminal nerve. So how to cause nevus of OTA at birth? Let me tell you. 　　

How is mole of Ota caused at birth

First, nevus of Ota is common in people of color. Two thirds of the patients have nevus of OTA at birth, and some of them appear in adolescence and gradually deepen and expand. The skin lesions of nevus of Ota are light cyan, gray blue, maroon cyan to blue black patches or dense spots. The skin lesions with long time can appear hypertrophy, and the nodules with the size of rice grains to mung beans can appear on them. 　　

Second: the skin color of nevus of Ota can be aggravated by the sun, fatigue, menstruation and pregnancy. Some nevus of Ota deepens and expands in adolescence. The color of nevus of Ota may vary with seasons. For example, the color of nevus of Ota is darker in summer and lighter in winter. Skin lesions last for life, malignant transformation is rare, occasionally in choroid, iris, orbit or brain malignant melanoma. 　　

Third: nevus of Ota is most often involved in the periorbital, forehead, zygomatic, temporal and alar side of the nose; often unilateral distribution, also see double buccal involvement; can be accompanied by ipsilateral sclera blue staining; serious nevus of Ota conjunctiva, cornea, iris, fundus, optic nerve papilla, retrobulbar adipose tissue, and even periorbital periosteum can also be involved; nevus of Ota does not fade, no conscious symptoms. 　　　　

matters needing attention

The above is the occurrence of nevus of Ota and the etiology of the introduction, I believe you must have a deep understanding of how nevus of Ota is produced, the incidence, which will be helpful for the correct understanding of nevus of Ota.