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.
Best Answer: Stress can cause people to grind their teeth more. Clenching your jaw for long periods of time will make the muscles in your face hurt. It might be causing your headaches, but the stress can also give you headaches. There are over the counter remedies for nighttime grinding.