I guess you refer to needle strategy only. Since you did not post what acupoints you have used or what pattern differentiation you had come up wtih, there is no way to comments. As a rule of thumb, chronic cases we can alwats use back shu points. In your case, scalp acupuncture always helps.
It you use herbals, it is a whole new world out there and many strategies can be applied.
Qi deficiency pattern, use astragulus, Cinnemon, and Five Agents Decoction,
Liver and kindey Yin Deficiency pattern, use Di Huang Pill,
Liver stagnation and blood stasis, Four Agents Dec. etc.
Chinese medical diagnosis is necessary for any case studies.