What Is The Treatment For Muscle Pain All Over The Body?

Hi, my wife has had muscle pain throughout her body for probably three weeks now. She can't lift her arms over her headto remove her shirt. the pain sometimes makes her wince just to move an arm. she is 52 yrs old and up until lately she has been quite active. she went through menipaus 10 years ago. she is 5 ft. 4in. tall and weighs about 180lbs.