Some causes of<unk>  have been identified; however, the causes of many cases of<unk>  remain unknown. Some people with<unk>  have a history of dry eyes, light sensitivity, and even fatigue. Others report no eye problems before onset of symptoms. Some drugs can induce<unk> , such as those used to treat Parkinson's disease, as well as hormone treatments, including estrogen-replacement therapy for women going through menopause.<unk>  can also be a symptom of acute withdrawal from benzodiazepines. Prolonged use of benzodiazepines can induce<unk>  and is a known risk factor for the development of<unk> .<unk>  may also come from abnormal functioning of the brain's basal ganglia. Simultaneous dry eye and dystonias such as Meige's syndrome have been observed.<unk> s can be caused by concussions in some rare cases, when a blow to the back of the head damages the basal ganglia. Multiple sclerosis can cause<unk> .
Blepharospasm
Hemifacial spasm
Osmophobia
Dysbarism
Pseudostrabismus
Horizontal gaze palsy
Oscillopsia
Coccydynia