if you've been out of the country recently you may need to have a tuberculin skin test. tuberculosis can cause night sweats chills cough fatigue fever as well as other things or can be asymptomatic. the skin test isn't painful just a bit uncomfortable because they create a tiny blister under your skin and check it 48 hours later for a reaction. you might be taking medication that causes these side effects. best advice is to just go see your doctor to make sure you don't have any infections.
what would cause nightly chills and fever and then during the day the symptoms go away and return at night?