Chronic Fatigue Syndrome (CFS), also known as myalgia encephalomyelitis (ME), is a medical situation characterized by long-time period fatigue and other signs and symptoms that limit a person's capability to perform ordinary day by day activities. Biological, genetic, infectious, and mental mechanisms were proposed; however, the cause is not always understood. Diagnosis is primarily based on a person's signs and symptoms. The fatigue is not always due to strenuous ongoing exertion, is not much relieved with the aid of rest, and is not due to a preceding medical condition. Symptoms of Chronic Fatigue Syndrome consists of sleep issues, muscle or joint pain, headaches, a sore throat, issues thinking, remembering, flu-like signs, feeling dizzy or sick, rapid, or irregular heartbeats.