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.
Top 10 facts about the world. Styes are caused by Staphylococcal bacteria. This type of bacteria can usually be found in the nasal passages and is easily passed to the eye. Staphylococcal is passed by rubbing the nose and then touching the eye area. The gland situated at the end of eyelid may then become infected. Styes are not detrimental to the eyes or to eyesight. Pain will occur, followed by a swelling or redness.