I have bee on methotrexate injections now 6 months. Lately I have to bring a pint of water to bed as Im waking up at around 4 am with sever cotton mouth. Now I do take Certirizine hydrochloride which is an over the counter antihistamine now and then as this helps with the itch I get in my left hand which started only 3 months ago. I have read about secondary sjorgens disease and hope its not that as my eyes are ok...not dry at all. Any advice welcome.