The symptom of itchy skin in summer, with bumps on scratching, is considered to be due to urticaria.
Patients with urticaria are mainly manifested with windsocks and angioedema. Windsocks are mainly raised on the surface of the skin and mucous membranes, mainly due to the dilatation of small blood vessels in the skin and mucous membranes and the increase of permeability caused by the activation of mast cells. They are mostly surrounded by a reactive erythema, which disappears within 24 hours, but may recur, usually with pruritus.
Angioedema presents as a sudden red or skin-colored, deep, subcutaneous, limited edema of the dermis. It will be primarily painful rather than pruritic and will subside more slowly than a windbag, with the vast majority having a favorable prognosis.
Especially in the summer time, patients may suffer from heat contact urticaria, solar urticaria, cholinergic urticaria, contact urticaria, and other factors, which may lead to the symptoms of itchy skin and bumps when scratching.
Patients with the above symptoms need to pay close attention, and it is recommended to go to the hospital in time. Under the guidance of professional physicians, antihistamines such as loratadine and cetirizine can be chosen to alleviate the symptoms, so as not to delay the condition.