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.
Top 15 Caffeine Withdrawal Symptoms. 1  Headache. A caffeine headache usually starts behind the eyes and then moves up the front of the head. 2  Sleepiness. This just isnât your normal tiredness, this is sitting up straight but still canât keep your eyes open tiredness. 3  Irritability. Everyone and everything gets on your last nerve.  Lethargy.