Under normal circumstances, the immune system is our defense system protecting us from outside invaders. However, researchers have uncovered evidence of several immune system abnormalities that may contribute to ME/CFS. An impaired immune system weakens the body’s ability to fight off infection and can cause symptoms such as:
- Sore throat
- Allergies to food, drugs, and/or chemicals
- Muscle and/or joint pain
- Fever
- Headache
