The white spot on the back does not tan

Skin is the largest human organ. If pathological elements appear on it in the form of white spots on the back, redness, rash, dots, etc., then this is a signal from the body about the development of an abnormal process. The causes of the pathological condition are varied, ranging from sunburn as a provoking circumstance to autoimmune diseases. Provoking factors include a decrease in immune status, the use of medications, and arterial hypertension.

Why do white spots appear?