I have red itchy rash on my right buttock. i sit all day and is that a cause. iam a receptionist. it comes and goes. does not itch all the time.

Rash: Rashes are impossible to diagnose over the computer. Usually sitting is not a risk factor for developing a rash, unless you are very old (It states you are 106?), and you get skin "breakdown" from not moving around (similar to a "bed sore"). When the rash is visible, have a dr. look at it to give you a diagnosis and any necessary treatment. Best wishes.