Small red dots on the skin in summer may be papular urticaria, allergic purpura, eczema and other factors, need to be analyzed according to the specific symptoms.
1. papular urticaria: most for bedbugs, mosquitoes, fleas, lice, mites and other bites, a small number of food allergies, can occur throughout the year, summer and fall more common. The skin lesions at the beginning of a slightly red papule, and then into a green bean or peanut size slightly fusiform red doughnut-like damage, often with small blisters at the top.
2. Henochromatosis purpura: It occurs in the lower limbs, mainly in the extensor side of the calf, and in severe cases, it can spread to the upper limbs and trunk. Before the onset of the disease, there are often upper respiratory tract infection, low fever, general malaise and other prodromal symptoms, followed by the appearance of red papules, usually within 24 hours of the development of pinpoint to soybean-sized purpura.
3. Eczema: Acute eczema occurs in the face, ears, hands, feet, forearms, calves and other exposed parts of the body, and in severe cases, it can be diffuse all over the body, often symmetrically distributed. The lesions are polymorphic, often manifested as erythema on the basis of the needle tip to grain size papules, papules, serious cases can appear small blisters, often fused into a piece, the boundary is not clear.
There may be other reasons for small red dots on the skin in summer, it is recommended to consult a doctor in time, under the guidance of the doctor for treatment.