<s>[INST] I sustained a fever of 102 last night. this morning when I got up I find that my feet, knees and thighs are aching to the point where I m unable to walk without assistance. Can this be permanent???? I m going to see my Dr soon. my e-mail is YYYY@YYYY [/INST] Hellman in different joints after fever is a common complaint by few patients. Such type of fever may be due to these possibilities, these include:1 Chickenguneia, diagnosis can be confirmed by serology test as well clinical history of patient.2 Strep throat also produces such type of symptoms, so physical examination by ENT is important.3 Rheumatoid arthritis, as this produces such type of symptoms. Get in blood for Rh factor, blood for CBC, ESR. In my opinion take Tylenol 10-12 mg / kg three or 4 times in day and consult your physician. Good luck. </s>