I would suggest a changing of bedsheets, mattresses and pillow
cases or curtains in your bedroom, cleaning thoroughly your room,
take a warm bath before you retire for the night (sweat can cause
irritation to the skin). Ensure that your room is well vented, if
there is no air-cond, try to ventilate the room in the morning by
opening the windows and closing it at night. These is to reduce the
problems that may be caused by the dust mites and other insects.
Also, change your pyjamas frequently.
Having done the above and still if the problem persists...
I wouldn't want to rule these out, get your blood glucose, liver
profile and kidney profile checked up in the lab, clinic or
hospital.
Just to ensure that they are within normal range before thinking of
anything psychogenic (mind related problems).
