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.
If you are with great stress, you may get eye strain or eyes appear red. But that is not a stye. A stye is one type of infection on the eyelids. That makes your eyelids looks red, puffy etc. It can be caused by medication, hyperventilation, stress, anxiety, drinking alcohol etc.