Chattering teeth is a bodily function in animals that occurs primarily in response to cold; the jaw muscles begin to shiver leading teeth to crash together.
It may also occur as a result of bruxism where emotional stress causes the jaw movements.
Certain medications can lead to teeth chattering as a side effect, especially antipsychotics and selective serotonin reuptake inhibitors.
[1][2][3][4][5][6] This medical symptom article is a stub.
You can help Wikipedia by expanding it.