Hi, am new to mumsnet and have a 3 yr old with above condition. Was wondering if anyone else has come accross this - hypotonia (or floppy baby syndrome as I have also heard it called) is a symptom usually resulting from cerebral palsy or muscular dystrophy. Fortunately, in the case of my son these 2 causes have been eliminated. We do not know why he has this condition, but have been told he always will have. Anyone else come accross this?