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.
Regular ingestion of the drug alters your brain's chemical makeup, leading to fatigue, headaches and nausea if you try to quit. Regular caffeine use alters your brainâs chemical makeup, leading to fatigue, headaches and nausea if you try to quit. Within 24 hours of quitting the drug, your withdrawal symptoms begin. Initially, theyâre subtle: The first thing you notice is that you feel mentally foggy, and lack alertness.