Other possible causes of muscle loss include:
injuries, such as broken bones
aging
burns
stroke
osteoarthritis
2. Overactive thyroid
Other symptoms include:
fast, irregular heart rate
anxiety
fatigue
heat intolerance
sleep troubles
3. Rheumatoid arthritis
smoking
secondhand smoking
obesity
4. Diabetes
dehydration
fatigue
blurry vision
excessive thirst
excessive hunger
5. Depression
constant sadness
loss of interest in hobbies
low energy
poor concentration
sleeping too little or too much
6. Inflammatory bowel disease
stomach pain
bloating
bloody stools
fatigue
8. Endocarditis
chest pain
difficulty breathing
night sweats
back pain
headache
9. Tuberculosis
bad cough that lasts 3 weeks or more
night sweats
chills
fever
10. Cancer
Early symptoms of cancer also include:
fever
fatigue
pain
skin changes