Red spots on the body are not painful

If the patient shows signs of mild erythema on the body, it is necessary to carefully observe the location and shape of erythema distribution. For erythema distributed on the inner palm, upper arm and upper limb, and flat with the skin, it is considered that it may be secondary syphilis. If this is the case, it is recommended that the patient go to the hospital to test Treponema pallidum. If syphilis is positive, benzathine penicillin injection treatment is required. For penicillin allergy patients, you can also choose to take doxycycline hydrochloride under the guidance of a doctor for treatment. Secondly, for erythema with obvious peeling like changes, consider the possibility of pityriasis rosea. Pityriasis rosea is a self-limiting disease, even if untreated, it can generally recover within 2-4 months.