New Daily Persistent Headache aka NDPH treating hospitals?

Hey everyone I live in Saitama, for roughly 3 years I've been suffering strange headache with eye socket pain nonstop and after getting sent from one hospital to another they ruled out only diagnosis left is New Daily Persistent Headache, has anyone suffered from this condition and was able to get proper help here in Japan's hospitals? If so which hospital did you go?
Thanks in advance