Question: what are the most common side effects of radiation therapy?
Answer: Skin problems. Some people who receive radiation therapy experience dryness, itching, blistering, or peeling. ... 
Fatigue. Fatigue describes feeling tired or exhausted almost all the time. ... 
Long-term side effects. ... 
Head and neck. ... 
Chest. ... 
Stomach and abdomen. ... 
Pelvis.