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.
A stye is usually caused by the bacteria staphylococcus aureus, which infects the sebaceous (oil) glands within the eyelids. Styes are quite common in infants and children but affect people of all ages. If the pores of the oil glands become blocked, they are prone to developing an infection.