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.
Less obvious is that withdrawal can have a detrimental impact on athletic performance. Symptoms peak in a day or two and are usually completely gone within four to seven days. Fortunately, if you resume caffeine intake in the midst of withdrawal, the symptoms, including headache, usually disappear pretty quickly.