Should i worry about trembling eyelid? i am otherwise very health.

Probably not: Trembling 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.

? Infection of lids: Agree with dr. Kwok. In my experience, such twitching my be the result of a low-grade infection caused by bacteria. Cleansing the lids with a product designed for the purpose, warm compresses ( to encourage better circulation and removal of stale tear oils), and lubrication of the dry eye may stop the annoyance. Antibiotic/anti-inflammatory drop medication, prescribed by an eyemd may be necessary.

Twitch: No worry. This is very common and should resolve as quickly as it came, although it can take weeks. If persistent or worsens, then i would have it assessed.