A circle of bumps on the hands and knees may be caused by eczema, hives, ringworm and other causes.
1. Eczema: a circle of bumps on hands and knees with localized itching, burning and stinging sensation may be eczema. It can be caused by a variety of internal environment such as infection, endocrine disorders; external environment such as allergies, hot and cold stimuli and other factors.
2. Urticaria: a circle of bumps on the hands and knees may be urticaria, is due to the expansion of small blood vessels in the skin, mucous membranes and increase in permeability and a limited edema reaction, usually within 2 to 24 hours to subside.
3. ringworm: hands and knees on a circle of pimples and scales, may be ringworm, caused by fungal skin disease, need to consult a doctor to find out the cause of allergies.
Hands and knees on a circle of goose bumps need to go to the hospital in time for diagnosis, diagnosis and symptomatic treatment, so as not to delay the condition.