Fukunai Pain Clinic is an internal medicine clinic specializing in pain treatment, located in Samoncho, Shinjuku Ward, Tokyo. The clinic addresses various types of pain and numbness throughout the body, including headaches, lower back pain, joint pain, and shingles-related pain, aiming to improve the quality of daily life through pain management. The clinic conducts clinical trials for migraines, using investigational drugs already approved for migraine treatment and prevention overseas. They have also introduced Emgality, a new migraine preventive medication. Clinical trials have reported that it reduced headache frequency by approximately 50% in half of migraine patients and to less than one-quarter in about 25% of patients. Although covered by insurance, it requires monthly injections and is relatively expensive. Due to restrictions on indications and facilities where it can be administered, patients undergo examinations by specialists from the Japanese Headache Society or the Japanese Society of Neurology to determine eligibility. Clinic hours are from 9:30 AM to 12:30 PM Monday through Saturday, and from 2:30 PM to 6:00 PM Monday through Friday. The clinic is closed on Sundays, holidays, and year-end and New Year holidays. In addition to English-language services, the clinic accepts credit cards and electronic payments, and provides barrier-free accessibility.