Yoshimasu Clinic, specializing in dermatology and allergology, is located in a tranquil setting along the Aridagawa River in Itoga-cho, Arida City, Wakayama Prefecture, and opened in September 2019. The clinic's director, Dr. Takashi Yoshimasu, holds a Doctor of Medicine degree and is certified as a specialist by both the Japanese Dermatological Association and the Japanese Society of Allergology. He brings over 11 years of regional dermatological experience as the chief of dermatology at Arida City Hospital. The clinic offers specialized care in dermatology, allergology, dermatologic surgery, pediatric dermatology, and alopecia, with a commitment to evidence-based treatment. For atopic dermatitis, the clinic provides access to the latest therapies including Dupixent and Olumiant, and also offers JAK inhibitors as a newer treatment option for alopecia areata. Aesthetic dermatology procedures such as chemical peels, iontophoresis, and electroporation are also available. Consultations are held from 9:00 to 12:00 in the morning and 15:00 to 18:30 in the afternoon, with morning hours available on Saturdays. The clinic is closed on Thursday afternoons, Saturday afternoons, Sundays, and public holidays. Appointments are preferred but walk-ins are welcome, and same-day numbered ticketing is available via the Aiticket system. English-speaking services are available, and the facility is fully accessible with ample parking. A referral network has been established with nearby medical institutions, including Wakayama Medical University Hospital.