mantoux test: tuberculin (a derivative of tubercle bacillus) is injected intradermally; a red area appearing 1-3 days later signifies an exposure (past or present) to tubercle bacilli and the need for further testing
skin test: any test to determine immunity or sensitivity to a disease by introducing small amounts on or into the skin
relapsing fever: marked by recurring high fever and transmitted by the bite of infected lice or ticks; characterized by episodes of high fever and chills and headache and muscle pain and nausea that recur every week or ten days for several months