What is a nervous tic?

A nervous tic is an involuntary, repeated movement or vocalization. Tics can be simple or complex. Simple tics are brief, single movements or vocalizations, such as eye blinking, shoulder shrugging, or throat clearing. Complex tics are longer, more coordinated movements or vocalizations, such as jumping, hopping, or repeating words or phrases.

Tics are often associated with attention deficit hyperactivity disorder (ADHD), but they can also occur in people who do not have ADHD. Tics can be caused by a variety of factors, including genetics, environmental factors, and stress.

Most tics are mild and do not require treatment. However, some tics can be severe and disruptive to daily activities. Treatment for tics may include behavioral therapy, medication, or a combination of both.