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.
The intensity of the headaches and other symptoms caused by withdrawal from caffeine varies depending on how much caffeine a person takes daily. In severe cases, even the slightest drop in caffeine intake can trigger withdrawal symptoms and headaches. The good news is that the pain and discomfort will naturally go away once a person has successfully completed caffeine withdrawal. This could take a few days, or in some cases, a few weeks or even months.