What is the cause of long sweat spots?

summary

Pityriasis variegata, formerly known as tinea versicolor, commonly known as sweat spots, is a superficial fungal disease caused by Malassezia infection of the cuticle. The disease is chronic, with mild inflammation, usually without conscious symptoms. The lesions are characterized by scattered or fused hypopigmentation or hyperpigmentation spots with chaff like desquamation on the chest, back, upper arm, armpit and sometimes the face. What is the cause of long sweat spots? Let's talk about it

What is the cause of long sweat spots?

The pathogen is a kind of lipophilic yeast, called Malassezia. This kind of fungi is saprophytic bacteria of normal skin, only in some special circumstances, such as high temperature and humidity, local fat and sweat, poor sanitary conditions, etc., the parasitic density of Pityrosporum is increased, and the saprophytic yeast can be transformed into mycelial type. The bacteria only invaded the superficial stratum corneum and did not cause dermal inflammation.

Perspiration spots are also hereditary. If they have a positive family history, they belong to polygenic inheritance. But like this hereditary perspiration spot, you can take precautions when you enter the summer, change laundry frequently, and take more baths. If it is hereditary perspiration, measures should be taken to prevent perspiration from late spring to early summer.

Ultraviolet radiation can also cause sweat spots. When the skin is strongly exposed to ultraviolet radiation, the epidermal layer of the skin will produce melanin to protect the sunburned skin, so there will be spots on the skin. When the metabolism of the skin is blocked, or UV damage is too large, melanin can not be timely discharged from the body, causing sweat spots.

matters needing attention

In daily life, you can wear long sleeve clothes with good ventilation, do a good job in sun protection, and avoid long-term direct contact with skin by ultraviolet rays. Wash frequently, change clothes frequently, and immediately change into clean clothes after sweating, so as to avoid the survival environment of sweat spot bacteria to the greatest extent.