Symptoms of nevus of Ota in infants?

summary

Nevus of Ota in infants is a common disease in the East. Its essence is melanosis in the dermis. The formation of nevus of Ota in infants is due to skin damage at birth. The skin lesions were mainly distributed in the first and second branches of trigeminal nerve. Babies are more common in colored races, such as yellow and black people, and the incidence rate of females is higher than that of men. That is to say, the formation of nevus of Ota in infants is innate and related to race and population. Symptoms of nevus of Ota in infants? Let's talk about it.

Symptoms of nevus of Ota in infants?

Nevus of Ota is a common disease in East Asian Mongolians. In Japan, nevus of Ota accounts for about 0.4% of dermatology outpatients and 2.6% of plastic surgery outpatients. The ratio of male to female is 1:3. About half of the patients were found with the disease at birth, but some of them began to be found in childhood. Individual patients with nevus of Ota did not show up until puberty. The lesions were composed of brown, gray and blue spots. The boundary of the lesions was not clear. The color of the spots in the lesions could be monochromatic or both, and the color was different. Due to the different density and location of melanocytes in the dermis of nevus of Ota in infants, the patches can be light brown to dark blue, and different parts of the same lesion can have different colors.

The lesions of some patients with nevus of Ota in infants tend to increase slowly. The patches occur in the forehead, periocular, buccal and zygomatic areas, which are equivalent to the distribution areas of trigeminal nerve areas I and II, and can account for all or part of this area. The patches can occur on one side of the face, and occasionally on both sides of the face, which are often bilateral symmetry, Some melanocytes were also distributed in conjunctiva, cornea and retina.

Clinically, some cases of nevus of Ota in infants begin to develop in childhood. Individual cases of nevus of Ota in infants do not appear until adolescence. The clinical manifestations of nevus of Ota in infants are patches composed of brown, gray and blue spots. The boundary of the lesions is not clear. The color of the spots in the lesions can be monochromatic or both, and the color is different. Infant nevus of Ota is due to the different density and location of melanin cells in the dermis. Patches can be light brown to dark blue. Different parts of the same lesion can have different colors. Therefore, infant nevus of Ota has a great destructive effect on people's beauty.

matters needing attention

Generally speaking, the occurrence and development of nevus of Ota in infants are very slow, and they can grow slowly in the early stage, but it is difficult to make a conclusion about the self limitation of growth. Some patients begin to be stable for a long time in childhood, and most experts believe that they will be stable after puberty. However, some individuals still tend to grow slowly at the age of 30, and some of them have enlarged rashes and deepened color during puberty, Excessive sunlight, fatigue, menstruation and pregnancy can make the skin rash color significantly deepened. Once the nevus of Ota occurs, it will not disappear for life.