Hiya. My mum is 89 and has mild to mod alzheimers. She was very mobile and apart from the memory issues all was ok. 7 weeks ago she developed shingles. She was in so much pain an emergency gp prescribed Pregabalin. Within 2 days she was hallucinating, and screaming at us to turn the music off, had tremors and her legs gave way and she collapsed. She also developed a UTI. 2 days of delirium in hospital with her screaming swearing, kicking us and trying to pull out catheter and drip was very disturbing to watch. 7 days in hospital in total she came out shuffling on a frame. She was so weak my 92 year old dad cldnt cope getting her to loo at night so she went into residential home for 2 weeks respite care. She is very slowly getting her strength back. One good thing is that she doesnt remember most of it of course. So...reason for my post? DO NOT ACCEPT Pregabalin for nerve ending pain for Alzheimer's patients with shingles. There are other drugs available. On further investigation Pregabalin can make healthy people very sleepy and get the tremors so you can imagine what it did to mum. This one drug caused us 4 weeks of hell