Can doctors tell me what does one do when his wisdom tooth is growing out?

Extract: At your age it is unusual for a wisdom tooth to erupt fully. Get a consult from an oral surgeon for extraction.

Depends: If there is room for the tooth and you can keep it clean there is no reason to do anything about it. If hygiene is a problem or if the palcement of the tooth affects the bite at all then you have some value judgments to make about extracting it.