The word tic derives from the Italian ticchio meaning caprice as synonym of whim and extravagance; however, far from being a whim or caprice of the individual who manifests them, tics are involuntary movements or vocalizations, although they may be extravagant because they appear repetitively with an inappropriate intensity and frequency, and are decontextualized or unrelated to situations since they are not goal-directed behaviors like voluntary movements or the voluntary emission of words or sounds.