Chronic Fatigue Syndrome (CFS or ME/CFS) is a condition of prolonged and severe tiredness or weariness (fatigue) that is not relieved by rest and is not directly caused by other conditions.
To be diagnosed with this condition, your tiredness must be severe enough to decrease your ability to participate in ordinary activities by 50%.
Symptoms of CFS are similar to those of most common viral infections (muscle aches, headache, and fatigue). They come on within a few hours or days and last for 6 months or more.
Symptoms of chronic fatigue syndrome can include:
- Tender lymph nodes
- Sore throat
- Muscle pain
- Joint pain
- Feeling tired
- Feeling discomfort after physical exertion.
These symptoms either stay with a person or come and go for more than six months. It’s important to note that the signs and symptoms of chronic fatigue syndrome are often similar to those of other health conditions.