Still's disease.
This type of disorder, along with a rash and fever, can be caused by Still's disease. This often develops in people who have the skin disease psoriasis [suh-RIE-uh-sis]. One type of this problem is caused by an autoimmune response against the synovial [sih-NOE-vee-ul] membrane, which is the rheumatoid [ROO-mah-toid] type. The most common type of this disorder is caused by the stiffening of cartilage over time, leading to pain in tendons. Name this joint pain that becomes more common with age.
This type of disorder, along with a rash and fever, can be caused by
osteoarthritis (accept arthralgia, before joint is mentioned accept joint pain, joint disorder, or joint disease)