[noun] [U] - a medical condition that causes stiffness and pain in the joints or muscles of the body, particularly in the shoulders and backShe suffers from rheumatism.Rheumatism is common in older people.I can't play the piano anymore because I have rheumatism in my fingers.
RHEUMATISM
Meaning of RHEUMATISM in English
Cambridge English vocab. Кембриджский английский словарь. 2012