What's wrong with the white spots on my arms

The appearance of white spots on the arms is very harmful and may have a great impact on the human body. In fact, congenital white spots may be caused by certain factors during embryonic development. It is a pigment deficiency disease. Don't worry if it is not too serious. If the leucorrhea has obvious expansion or other sensations, you need to check to know.

Pathological etiology

The cause of congenital vitiligo may be due to various reasons during embryonic development. Generally, white patches appear on the skin at birth or shortly after birth, such as achromic nevus, anemic nevus, achromic incontinence pigmenti, etc. The distribution of these white spots is generally limited or has certain characteristics, and the color of the white spots will not be very white. As the skin grows and develops, these white spots will neither fade nor expand significantly after stabilizing.

There are many causes of acquired vitiligo. Since the skin is in direct contact with the external environment, the appearance of white spots on the skin may be caused by both internal reasons and external environmental factors, such as sun exposure, chemicals, fungal infections, etc. There are many skin diseases that can cause skin hypopigmentation or depigmentation. Some inflammatory skin diseases can cause white spots on local parts of the skin. These white spots usually occur before other inflammatory skin diseases, such as eczema and psoriasis, which destroy the melanocytes in the basal layer of the skin and cause skin depigmentation.

Disease diagnosis

Diagnosis and differential diagnosis of white spots on the skin

Don't assume that white spots on the skin are vitiligo. White spots on the skin involve many skin diseases. It can be an independent skin disease or a symptom of a certain skin disease. If you find white spots on your skin, you should go to the hospital for a clear diagnosis.

1. Basic diagnostic points for vitiligo: Irregular pure white patches of varying sizes, single or multiple, appear on the hair, face, trunk, limbs and other parts of the body. The area of ​​white spots gradually expands and the number increases. The boundaries of the white spots are clear, the hair inside the spots is also white, the surface is smooth, there is no scale or scab, and the sensory and secretory functions are normal. Vitiligo is sensitive to sunlight and turns red when exposed to the sun.

2. Vitiligo needs to be differentiated from the following diseases:

1. Anemic nevus: localized hypopigmented spots, not depigmentation. The disease occurs since childhood and has no tendency to expand. When the skin lesions are rubbed vigorously, the local area does not turn red, while the surrounding normal skin turns red.