Suggest Treatment For Pain In Arms And Shoulders

My arms and shoulders ache from time to time. The pain is like a dull, throbbing ache, simiar to what u get if someone punches you and gives u

you a "dead arm". It's affecting me as I cant lift things or move my arms much. Massage makes it worse, as does stretching. If I keep still for a while it goes but as soon as I move again, it hurts!! Help :(