Hi Is there any rash associated with itching? Any one near you having same problem? More details are required to identify the cause.

U could b suffering from scabies. Scabies is contagious and can spread quickly through close physical contact in a family or thru ur hostel stay. Scabies signs and symptoms include Itching, often severe and usually worse at night. There could thin, irregular burrow tracks made up of tiny blisters or bumps on your skin. Consult a Dermatologist for the same to prevent further progression of lesions.

First have to diagnose what is causing the itching.... kindly consult online with relevant photographs for proper diagnosis and management