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.
Here are seven things to know about eye styes: 1  The first signs are pain, redness, swelling and tenderness. 2  Styes typically don't cause vision problems. 3  Styes are caused by staphylococcal bacteria. 4  Styes are contagious. 5  Most styes heal on their own. 6  Never pop a stye. 7  Other eye problems can accompany styes.