There are more possibilities, such as allergic dermatitis, folliculitis, viral rash, purpura, spider nevus, etc., which can be further differentiated by combining their respective characteristics. 1, red dots with itching is mostly allergic diseases, allergic dermatitis, eczema, urticaria are such, can occur in all parts of the body, it is recommended that anti-allergy treatment – oral cetirizine tablets, external use of glyburide lotion, the course of treatment for 1 week, diet do not eat spicy stimulating food, less alcohol, etc. 2, red dots with pain are mostly associated with bacterial infections, of which folliculitis is the most common, can also be fungal folliculitis (Malassezia folliculitis), it is recommended to choose sensitive creams, such as Bactrim, ketoconazole cream, etc., pay attention to personal hygiene, do not over intake of oil. 3, red dots with fever before the onset of the rash or fever and other symptoms of infection, consider viral rash, such as rubella, measles, etc., treatment to actively anti-viral / anti-bacterial based, need to be combined with blood tests such as routine results. 4, red dots pressure does not fade pressure does not fade suggests that the lesion is located in the dermis, red dots are tiny bleeding points, namely purpura, most often in the lower limbs. It is necessary to improve the blood and urine routine to understand whether there are systemic lesions, and to pay attention to rest in life. Red bumps cover almost all skin disease species performance, specific diagnosis needs to be combined with specific performance, such as rash size, location, distribution characteristics and conscious symptoms.