(1) Although thought to be particularly associated with Asperger's syndrome, clumsiness or incoordination (developmental coordination disorder) can occur in any of the autistic spectrum disorders(2) Nerve damage can cause motor or sensory weakness with numbness, tingling and incoordination .(3) Weakness, incoordination , cramps and spasm develop with difficulty in using the hands for skilled movements, also with walking, speaking and swallowing.(4) These include euphoria, fixed and complacent ideas, uncontrollable laughter, and neuromuscular incoordination .(5) Some children taking Neurontin may experience fatigue, sleep problems, dizziness, incoordination , behavioral problems, weight gain, movement problems or nystagmus (a rhythmical jerking of the colored part of the eye).