In maximum instances, the cause of ache originating inside multiple joints is arthritis. Disorders that purpose arthritis may additionally fluctuate from every different in certain dispositions, together with the following: How many and which joints they normally involve Whether the primary part of the skeleton, which includes the backbone or pelvis, is generally involved Whether arthritis is surprising (acute) or longstanding (chronic) Acute arthritis affecting more than one joints is most customarily due to Viral infection The beginning of joint disease or a flare-up of a current continual joint disorder (such as rheumatoid arthritis or psoriatic arthritis) Gout or calcium pyrophosphate arthritis (formerly known as pseudogout) Less common causes of acute arthritis in a couple of joints encompass Lyme disease (which additionally might also have an effect on most effective one joint), gonorrhea and streptococcal bacterial infections, reactive arthritis (arthritis that ...