An adult-onset still's disease with autoimmune thyroiditis.

Adult-onset Still's disease is a rare inflammatory disorder of unknown etiology and has same clinical characteristics of the systemic form of juvenile rheumatoid arthritis. A 17 years old white female had arthralgias of multiple joints including small joints of hands. She had fever, rash, hepatosplenomegaly, and CRP-122mg/dl, ESR-91mm in 1st hour. She had also TSH - 6.24μIU/mL, fT3 - 2.1pg/mL, fT4 - 1.36ng/dL and diagnosed as Adult-onset Still's disease with autoimmune thyroiditis. It is an inherited condition and is more common in women than in men.