Cymbalta is used to treat major depressive disorder and general anxiety disorder. It is also used to treat a chronic pain disorder called fibromyalgia, and to treat pain caused by nerve damage in people with diabetes (diabetic neuropathy).
Caffeine-withdrawal headaches can last up to 48 hours and can be as intense as a migraine headache. Withdrawal symptoms can begin 12 to 24 hours after the last cup of coffee and can last up to 1 week. These symptoms can include lethargy, extreme nervousness, irritability, sweating, headaches and shakiness.
And coffee isn't the only culprit--any type of caffeine can cause withdrawal. Caffeine withdrawal symptoms typically appear 12 to 24 hours after abstaining from coffee, and peak within 24 to 48 hours. They include: headache; lethargy and drowsiness; depressed mood; anxiety; nausea; vomiting; muscle pain and stiffness; and inability to concentrate.