Brown spots on the body may be caused by hyperpigmentation, sun spots, freckles, lichen planus and other factors.
1. Hyperpigmentation: due to local inflammation, trauma, allergic rashes, etc., resulting in deepening of local skin color or increasing the amount of pigment, which can often appear as brown, tan or black spots on the skin.
2. Sun spots: i.e. solar dermatitis, after intense sun exposure, within a few hours or the next day, the sunburned skin becomes red and swollen, accompanied by burning sensation and tingling; patients with milder condition may appear darker brown spots after a few days, when the redness and burning pain subside.
2. Freckles: If exposed to the sun for a long time, it will lead to the enhancement of melanin production ability of local melanocytes in the skin, which will lead to a large amount of melanin deposition on the body, thus triggering the symptom of brown spots on the body.
3. Tinea versicolor: If you usually sweat a lot and don’t do a good job of cleaning, it will lead to Malassezia infection, which will stimulate the surface layer of the skin, causing the symptoms of brown spots on the body, and at the same time, the surface will be covered with scales.
Brown spots on the body, there may be other reasons (such as coffee spots, etc.), it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, and then give targeted treatment or treatment.