Small red dots on the arms may be eczema, insect bite dermatitis and thrombocytopenic purpura and other diseases.
1. Eczema: the appearance of eczema is considered to be related to the environment, food, heredity, immunity and other factors, the patient’s skin will appear erythematous spots, corn-sized pimples and blisters and other symptoms, commonly found on the hands and feet, limbs and other places.
2. Insect bite dermatitis: the emergence of this disease is considered to be related to insect bites and other factors, such as lice, mites, fleas, etc., the clinical manifestations of the spindle-shaped bright red masses, which are common in the waist and buttocks, limbs and other places.
3. Thrombocytopenic purpura: its etiology is considered to be related to primary diseases, heredity and immune factors, mainly manifested as petechiae and ecchymosis, which can be seen in all parts of the body.
There are many diseases that cause small red dots on the arms, so it is recommended that patients go to regular hospitals for relevant examinations to clarify the causes.