Does anyone have experience of the use of botulinus toxin (in tiny doses obviously) to release otherwise rigid muscles? My wife's head is now virtually at right angles to her body with her chin pressed against her chest - although not at night when she is asleep.. Even when she is eating it is hard for her to raise her head although when something interesting or unexpected happens she does manage it. Her neurologist believes that the problem could be solved, at least to a significant degree, if the muscles at the side of her neck could be relaxed/ mildly paralysed - and he suggests a form of toxin which he says will be effective for 4 - 6 months before needing a repeat.
Does it work?