10 days on deltacortril 30 mg reduced to 20 after 1 week now reduced to 10. no significant reduction in pain in shoulders and neck. Blood markers all normal . Thought it was PMR or GCA . Started me on 30 mg Cymbalta on Friday (3 days ago) waiting for neck and head scan. Feel so awful on these meds muscle jerks, headache across front of head, and I feel so fatigued and spaced out. Ha to take 0.25 Xanax last night to calm down. Question is ...can I stop cold turkey today taking these meds.