Hi dont know if this is an ms symptom or not,or it could be memopausal?

i ,keep on scratching my legs the itch is horrendous,Ive been using an antihistimine tab,also trying to use diprobase cream.My legs are red at the mo,the cats havent got fleas or no bed bugs etc.There isnt no rash to speak off,i havent been bitten.I do suffer from seb dermatitis,and its on face,scalp,but not on arms,body,legs.Been going on for a few days now.I havent changed anything,soap,washing powder etc.I just carnt put my finger on it.I just wondered if anyone else had itchy places on body