Stuttering is a speech disorder characterized by interruptions in the flow of speech, including repetitions, prolongations, or blocks of sounds, syllables, or words. It often begins in childhood and can persist into adulthood.

Vertigo is a form of dizziness where you feel like you or your surroundings are spinning or moving when there's no actual motion. It's often caused by inner ear problems or other health issues.

Paralysis is a loss of muscle function in part of your body. It can be temporary or permanent and can affect one or more muscles.