Health Topics A-Z

Stroke is a medical emergency that happens when blood flow to the brain is blocked or a blood vessel bursts. It is the fourth leading cause of death in the United States and the most common cause of adult disability.

Stuttering is a speech disorder characterized by repetition of sounds, syllables, or words; prolongation of sounds; and interruptions in speech known as blocks.

Substance use disorders are chronic, treatable medical conditions that involve compulsive seeking and use of alcohol or other drugs, despite harmful consequences. Substance use disorders range in severity from mild to severe.