Does strep throat affect the brain?

In rare cases, strep throat can lead to complications that affect the brain. One such complication is rheumatic fever, which is a systemic inflammatory condition that can develop after untreated or inadequately treated strep throat. Rheumatic fever can cause inflammation in various parts of the body, including the joints, heart, brain, and skin.

When rheumatic fever affects the brain, it is known as Sydenham's chorea or PANDAS (Pediatric Autoimmune Neuropsychiatric Disorders Associated with Streptococcal Infections). Sydenham's chorea is characterized by involuntary movements, muscle weakness, emotional disturbances, and behavioral changes. It typically occurs in children and young adults and can cause a range of symptoms, including:

- Rapid involuntary movements (chorea)

- Difficulty with coordination and balance

- Slurred speech

- Emotional instability

- Irritability

- Anxiety

- Depression

- Obsessive-compulsive behavior

- Attention deficit hyperactivity disorder (ADHD)-like symptoms

Sydenham's chorea is usually treated with medications to control the involuntary movements and manage the emotional and behavioral symptoms. In severe cases, hospitalization may be necessary. Most individuals recover from Sydenham's chorea within a few months, although some may experience persistent symptoms or relapses.

It's important to note that strep throat typically causes a mild illness, and complications like rheumatic fever and Sydenham's chorea are rare. However, early diagnosis and treatment of strep throat are essential to reduce the risk of these complications.