Hi
Welcome to the MedHelp forum!
If you are a lady and in the menopausal age, then this is a common symptom. Hormone replacement therapy often helps. It is also seen in people who are very anxious and stressed out. Take up yoga, deep breathing exercise, walking etc to relieve stress. Music and aerobics are also good stress busters. Drink plenty of fluids and water (not caffeine), eat fresh fruits and vegetables and keep yourself busy throughout the day.
Very dry skin and disorders of thyroid gland all can precipitate a crawling sensation.
The other possibility is Morgellons disease often mimics scabies. The disease is believed to be caused by weak immune systems in people that have contracted the tick-borne Lyme Disease at some point in their life. It can also be a fungal infection like Tinea corporis. Do discuss with your doctor and get this investigated. Hope this helps. Take care!