Fever is one of the most common complaints that causes a person to seek medical help.

Four basic clinical categories Patients with fever and obvious symptoms and/or localizing signs. Those with fever and skin rash Those with fever and lymphadenopathy Those with fever but no other symptom or localizing sign. The majority of patients with fever as their only complaint will either Defervesce spontaneously, or Develop localizing clinical or laboratory findings within 2 - 3 weeks. Unexplained and persistent fever beyond 3 weeks should be considered an FUO.

Fever patterns