Chest and back long a lot of small particles may be related to folliculitis, eczema, acne, etc., need to be on the cause of the general treatment, drugs and physical therapy to remove. 1. For folliculitis, you should follow the doctor’s instructions to use mupirocin ointment and other topical drugs, oral amoxicillin and other antibiotics for serious cases; ultrashort wave, far-infrared ray and other physical therapy can promote the infection to subside. 2. For eczema, you can follow the doctor’s instructions to use tacrolimus ointment and other calcium-modulated neural phosphatase inhibitors, halometasone and other hormone ointment, cetirizine and other antihistamines, etc.; ultraviolet irradiation and other physical therapy can help eczema recovery. 3. For acne caused by, should pay attention to clean, can follow the doctor’s instructions for external adapalene gel, vinpocetine cream, etc., oral vitamin B6 and other drugs; photodynamic therapy and other physical therapy is conducive to the recovery of skin lesions. It is recommended that people who have a lot of small particles on the chest and back should consult a doctor in time to clarify the cause of the disease and standardize the treatment under the guidance of the doctor.