Zhang Chao, Associate Chief Physician Specialties: With 20 years of frontline clinical experience in dermatology, primarily focused on the treatment of allergic and inflammatory skin diseases such as eczema/atopic dermatitis in adolescents; skilled in fine surgical procedures, laser therapy, photodynamic therapy, and minimally invasive injection treatments for various disfiguring skin conditions including alopecia areata, acne, nevus sebaceous, axillary osmidrosis, pigmented nevi, scars, and postoperative scars. Current positions include: Member of the Pediatric Dermatology Group, Committee on Skin and Venereal Diseases, Chinese Association of Integrative Medicine; Member of the Photomedicine Group, Committee on Dermatological Rehabilitation, Chinese Association of Rehabilitation Medicine; Member of the Skin Tumor and Cosmetic Suture Group, Committee on Aesthetic Medicine, Chinese Research Hospital Association; Member of the Dermatologic Surgery Group, Committee on Skin and Health Education, China Medical Education Association; Member of the Hair Group, Shanghai Medical Association Dermatology Branch, among others. Main research interests: Basic and clinical studies on skin appendages such as hair follicles, sebaceous glands, and sweat glands in relation to disfiguring skin diseases. Has participated in multiple national, provincial, and municipal research projects and published several SCI papers.