The red rash on the body is particularly itchy need to identify the cause, may be caused by scabies, urticaria, eczema, etc., need to be under the guidance of the doctor to carry out targeted treatment, such as medication, physical therapy, surgery and so on.
1. Scabies: mainly manifested as red spots, papules, pimples and tunnels (tiny, raised, grayish-white or light-black lines), accompanied by severe itching at night. Consider topical sulfur ointment, salicylic acid ointment, etc.; oral antihistamines such as loratadine for severe itching; and anti-parasitic drugs such as ivermectin; consider surgical excision or liquid nitrogen cryotherapy if necessary.
2. papular urticaria: mainly manifested as scattered, small blisters on the top of the small papules, surrounded by a red halo, often accompanied by itchy symptoms, the onset of early patients can appear on the arm of several small red dots the size of a pinpoint. Patients can usually apply antihistamines for treatment, such as loratadine, cetirizine and so on.
3. Eczema: the lesions have more forms, which can be small papules, red papules, small blisters, papules, etc., and even flaky infiltrative erythema, accompanied by intense itching. Appropriate topical medications need to be given according to the staging of the lesions, such as glycerite lotion, boric acid solution, zinc oxide paste, glucocorticoid ointment, etc.; oral antihistamine medications, such as cetirizine, can also be considered.
It is not excluded that other factors cause, it is recommended that the patient timely consultation, by the doctor to clarify the cause, give targeted treatment, do not blindly self-medication.