Table Types of Tics Type Motor Vocal Simple Blinking Grimacing Head jerking Shoulder shrugging Grunting or barking Sniffing or snorting Throat clearing Complex Combinations of simple tics (eg, head turning plus shoulder shrugging) Copropraxia: Using sexual or obscene gestures Echopraxia: Imitating someone's movements Coprolalia: Uttering socially inappropriate words (eg, obscenities, ethnic slurs) Echolalia: Repeating one's own or another's sounds or words Diagnosis of Tic Disorders Clinical evaluation Diagnosis is clinical.