It's been about a week. I don't know when it grows. It's usually a little itchy and painless. After grasping the arm, it's congested. It's a pimple, not a piece. Can it be a tumor
This situation is considered papular urticaria (insect bite dermatitis), which is generally the skin allergic reaction caused by the bite of mosquitoes, mites, fleas and other insects. It doesn't look like a tumor. The treatment can be applied with Halometasone Cream once in the morning and once in the evening. Try not to eat river food, seafood, pepper, etc. during the treatment.
Anti itching drugs should be used to treat local skin infection and skin irritation, which should be a clear manifestation of anti itching drugs.
If there are red pimples on your arms, you should still pay attention to this situation. Try to combine some local ointment and apply it effectively to improve the symptoms of controlling the disease. You should pay attention not to things at ordinary times. You need to eat light food and drink for conditioning.