My Mother is 84 years old - she is maybe 95 lbs. She was diagnosed with parkinson's about 20 years ago. She had the DBS done about 15 years ago for tremors on her right side. She is also taking 5 sinemet 100-25mg a day. The problem is, in the last year she has been having spells of hallucinating where she is psychotic for 3 or more days and then eventually she comes out of it. She has seen the neurologist who prescribed 25mg of seroquel up to 3 times a day for when we see her going into one of these spells until she becomes clear again. She is in a home and it seems like this is a major thing to get them to do - I'm not sure why but they had the GP change the order to 25 mg of seroquel every night but this didn't keep the latest episode from happening so right now she is in a hallucinating state. My question is, could taking that much sinemet be causing the hallucinations and should we try and cut back on that as well or instead? The last couple months she has been talking about people in her room at night and people in her bed which seem like hallucinations to me as well but not full blown psychotic state like she's in right now.