Seek an appointment from a TMJ specialist if you are experiencing pain. The TMJ disc should glide smoothly as the mandible moves, and should not click. There could be a dysfunction if the disc becomes displaced. If you also experience headaches or changes in bite, have limited opening, or jaw fatiguestiffness, seek an appointment with the TMJ specialist. If its painless or just occasional, not affecting your function or bite, it is benign.

Yes it can. However, clicking sound does not necessarily need treatment if there is no pain.