Patient's question:
My five-month-old baby has a red, unidentified lump on her thigh, which is a bit like hives, but I'm not sure. What are hives? Additional question: She doesn't feel any pain or itching, and it hasn't gone away after three days. Should I seek medical attention?Doctor's answer:
The term "urticaria" is commonly known as "hives." It is a localized edema reaction caused by the dilation and increased permeability of small blood vessels in the skin and mucous membranes due to various allergenic factors such as drugs, foods, pollen, and infections. The skin lesions have an irregular shape and generally subside within 24 hours. However, they may also recur and persist without resolution.