Question: body aches are symptoms of what?
Answer: Fibromyalgia. Pain, fatigue, and muscle stiffness are all symptoms of fibromyalgia, a long-term condition that causes aches and pains throughout the body. ... 
Infections and viruses. ... 
Medications. ... 
Fluid retention. ... 
Hypokalemia. ... 
Stress. ... 
Dehydration. ... 
Lack of sleep.