Neurological. Guide what is the deases!

He is having unconscious and roaming head when he goes for a sleep his head feels like roaming or moving round and round whenever he take side turn while sleeping he also feel wometting and does lot of wometting and he feels burning effect in his whole legs and couldn't sleep whole night and he take sleeping peels also but still he couldn't sleep but for short span of time, increasing day by day and it feeks that someone has lid fire in his whole legs shown to many neurologist but couldn't find anything and all necessary test has been done like ctscan mri eeg blood test but nothing is shown and not getting relax he is suffering from last 2-3 years can you sugest to whom we should consult and which specialises doctor as we are going to chenai sooner plz guide what is the deases