But they often have symptoms of some autoimmune disease, like being tired all the time and pain. 1  CFS can cause you to be very tired, have trouble concentrating, feel weak, and have muscle pain. 2  Symptoms of CFS come and go. 3  The cause of CFS is not known.
Best Answer: A sty is a noncontagious infection of the eyelash follicle, it can be caused by effects of medication, hyperventilation, stress, anxiety, drinking alcohol,Styes are very common and are not a serious problem. Most will go away on their own. i really hope this helps.
Everyday Health: How does stress contribute to cholesterol? Dr. Stuart Seale: Studies have shown that stress increases cholesterol not only in the short-term but can also affect cholesterol levels even years down the road. The cause for this isn't exactly known.