A small bug in the ear is called a foreign body in the external auditory canal and needs to be removed as soon as possible.
Adults can usually sense a foreign body in the ear, while children are usually found during an ENT visit. Often small insects and such animal foreign bodies can crawl and move around, causing ear itching, severe ear pain, noise, etc., which can make the patient panic and even damage the tympanic membrane and combine with infections, etc. As most insects cannot crawl backwards, they can be removed as soon as possible.
As most insects cannot crawl backwards or rotate in the external auditory canal, it may lead to uninterrupted crawling towards the eardrum. Professional doctors will first use oil, ethanol and other drops into the ear, or ether-soaked cotton balls placed in the external auditory canal for a few minutes to anesthetize or kill the insects, then you can use tweezers to remove or rinse out the insects.
Remember that you should not dig into the ear without authorization after the bugs have entered the ear, so as not to make the bugs go deeper into the ear, and you should consult a doctor as soon as possible.