It seems that I was bitten by something when I went to the beach in August and scratched it, and it was a round red patch. I didn't care about it, but the red part is getting bigger and bigger, and at first there were blisters, and now it's starting to peel a little bit, and I feel itchy occasionally on the back side of my knee.Is it tinea corporis?
It is more likely to be tinea corporis or pityriasis rosea.Tinea corporis is a fungal infection, and the specific cause of pityriasis rosea is not easy to find and is related to viral infections that cause it, or seasonal changes.It is advisable to go to the hospital to have a doctor's interview and treat the symptoms according to the results.
According to your description, if the wound becomes red after being bitten by mosquitoes, there are flakes, consider that it may be contact dermatitis, may need to go to the hospital dermatology examination to confirm the diagnosis, symptomatic treatment, patients are advised to avoid spicy and irritating food.Avoid eating beef and mutton, seafood, strong tea, coffee, avoid drinking alcohol.
According to your description and pictures, eczema caused by skin allergy is considered.You can use glucocorticoids for topical treatment, and you can also take anti-itch treatment or non-steroidal drugs.Such as dermaplanin ointment or fusidic acid cream, if recurring, it is recommended to go to a regular clinic or hospital dermatology department.