My question is related to my eye. my right eye has been sort of twitching on the bottom eyelid. it started on sunday and hasnt stopped. it comes and goes but when its there its very difficult to blink . i would like to know why this is happening ?

Can be myokymia: Random twitching of an eyelid, which happens in normal people, is called myokymia (an involuntary, spontaneous, quivering of a few muscle cell bundles within a muscle). Myokymia starts and stops spontaneously. In the eyelids, it can last a few minutes to a few days. One should see an ophthalmologist (md eye doctor) if such symptoms persist, keep recurring, or are combined with any other symptoms.