Arthur Marka, MD is a dermatologist in Portsmouth, New Hampshire, whose care emphasizes patient education, early intervention, and practical treatment. His work includes skin cancer detection and treatment as well as care for acne, eczema, psoriasis, rosacea, hair loss, and persistent rashes. He is described as providing comprehensive dermatologic care that balances diagnosis, ongoing management, and long-term skin health with a compassionate, attentive approach focused on helping patients make informed decisions.