What could possibly be the cause of waking up every morning with the back of my head drenched in sweat? would these be considered night sweats if the sweat is only on the back of my head? 31 year old woman have had this for a little over 2 years?

Electric blanket, thermos rare too high, too many covers/quilt?

In addition to heavy bedclothes or too warm an environment & in view of absence of other symptoms for 2 years of these sweats, I would look for benign causes such as hormonal causes. Periods normal? Do you take Tylenol or advil type meds in the evening which can cause night sweats. Thyroid,cbc testing done& OK? Have your MD perform a physical exam& order appropriate lab work for peace of mind.