<s>[INST] I have a grandson who is very delayed. He is 5 years old and doesn t talk, walk or communicate, he also has very low muscle tone. I have a suspicion that he has cerebral palsy, but no official diagnosis. Over the past few months now he has been going through a stage where he is extremely tired, he just lays and sleeps , he will eat if fed. this will last for about a week, during this time he has no bowel movements. when he comes out of this period he has mega bowel movements and then goes into a hyper stage for a couple weeks where he doesnt sleep much and never sits still. Very weird. I know there are many more questions but have you heard of anything like this? [/INST] You need to get your grandson IQ, screen for metabolic disorders, chromosomal abnormalities etc. delayed milestones and decreased muscle tone can present in mental retardation also. In any brain damage patient be it cerebral palsy or mental retardation, there is high chances of having other psychiatric illness. His symptoms are suggestive of either bipolar disorder or ADHD. I would advise you to consult doctor get him thoroughly investigated and diagnosed and treated accordingly </s>