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Sweden Bernd 2021-07-30 04:34:52 ⋅ 1mn No. 118429
Good morning. Slept almost 9 hours and woke up with headache. Caffeine withdrawal sucks.
New Zealand Bernd 2021-07-30 06:03:59 ⋅ 1mn No. 118430
Just drink the caffeine, it won't kill you.
Norway Bernd 2021-07-30 10:06:12 ⋅ 1mn No. 118437
Germany Bernd 2021-07-30 15:49:38 ⋅ 1mn No. 118462
>>118437 A 44-year-old man presented in May, 2001, with muscle cramps. He had no medical history of note, but volunteered the fact that he had been drinking up to 4 L of black tea per day over the past 25 years. His preferred brand was GoldTeefix (Tekanne, Salzburg, Austria). Since this type of tea had given him occasional gastric pain, he changed to Earl Grey (Twinings & Company, London, UK), which he thought would be less harmful to his stomach. 1 week after the change, he noticed repeated muscle cramps for some seconds in his right foot. The longer he drank Earl Grey tea, the more intense the muscle cramps became. After 3 weeks, they also occurred in the left foot. After 5 weeks, muscle cramps had spread towards the hands and the right calf. Occasionally, he observed fasciculations of the right adductor pollicis and gastrocnemius. Additionally, he noted distal paraesthesias in all limbs, and a feeling of pressure in his eyes, associated with blurred vision, particularly in darkness. On neurologic examination he had reduced visual acuity and fasciculations in the right tibialis anterior and adductor pollicis. Motor and sensory nerve conduction studies of the right median, peroneal and sural nerves were normal. Needle electromyography of the right tibialis anterior showed fasciculations at 6 of 20 sites, but motor unit architecture was preserved. Ophthalmological tonometry and fundoscopy, and cerebral magnetic resonance imaging were normal. Tests of thyroid, hepatic, adrenal, and kidney functions showed no abnormalities. Serum and urine potassium, chloride, calcium, magnesium, and phosphate were all within the normal range. He did not have polydipsia, and was quite capable of reducing his fluid intake to 1–2 L per day. I excluded motor neurone disease, polyneuropathy, myopathy, neuromyotonia, stiff-man syndrome, and Machado-Joseph disease by appropriate tests. The patient assumed that there was a relation between his symptoms and his tea consumption, and stopped drinking Earl Grey after 5 months, reverting to pure black tea again. Within 1 week, his symptoms had completely disappeared. Symptoms also remained absent if he completely withdrew from tea, which he did in the nature of experiment, for about a week. He found that his symptoms did not recur as long as he consumed no more than 1 L of Earl Grey daily. When last seen in November, 2001, neurological examination, nerve conduction studies, and electromyography were normal. He was still drinking 2 L of plain black tea daily (his entire fluid intake), and had no complaints.