I Have Been Battling A Horrible Itch For 3 Months.

I have been battling a horrible itch for 3 months. My body now has open area from scratching from the back of my head to my lower abdomen. Antihistamines does not stop the itching. My lymph node behind my right ear is swollen and painful. Allergist discharged me with no results. Awaiting skin biopsy and visit with dermatologist now but I am miserable!