The stye in the eyes is also called blepharitis, is the acute inflammation of glandula sebacea or tarsus. There are four reasons to the happening of stye. First, over fatigue of eyes, it leads to the opening of gland congested by contract of muscle around the eyes socket. Two, the bacterial and virus get into the opening of glandula sebacea. Three, reduced from food allergy. Four, diabetes induce to the symptoms. As for the first reason, it may happen by the over fatigue of the eyes. Stay up too late, it is bad to your whole body as well as the eyes. Frequently stay up late, the eyes fatigue will induce the circulation of blood slowing down, the erythrocyte's oxygen supply reduce, the carbon dioxide and metabolic waste accumulation, the blood around your eyes lack of oxygen, the blood congest and pigmentation of eyes blood will be happen. For the beauty and the health sake both, please go to sleep early and get up early!