Explore comprehensive guides on hundreds of common and rare diseases and conditions from the experts at Mayo Clinic.

从 Mayo Clinic 的专家那里探索从最常见到最罕见的医学疾病和病症的完整列表。

Metabolic dysfunction-associated steatotic liver disease (MASLD), formerly called nonalcoholic fatty liver disease (NAFLD), is a liver condition that affects people with excess weight, obesity or other …

Mar 17, 2026 · Overview Amyotrophic lateral sclerosis (a-my-o-TROE-fik LAT-ur-ul skluh-ROE-sis) is a nervous system disease that affects nerve cells in the brain and spinal cord. Also known as ALS, the …

Nov 2, 2024 · Dizziness has many possible causes. These include conditions that affect the inner ear, motion sickness and medicine side effects. Very rarely, dizziness may be caused by a condition such …

Apr 23, 2025 · Gastroesophageal reflux disease happens when stomach acid flows back up into the esophagus and causes heartburn. It's often called GERD for short. This backwash is known as acid …

Dec 24, 2025 · Learn about symptoms, causes, treatment and prevention of this parasitic infection that can cause severe disease.

Nov 27, 2024 · Bullous pemphigoid (BUL-us PEM-fih-goid) is a rare skin condition that causes large fluid-filled blisters. They often appear on the skin near creases, such as the upper thighs and …

Aug 23, 2024 · COVID-19 can have lasting symptoms that affect many parts of the body. Learn more about the symptoms and effects of long COVID.

Oct 22, 2024 · This common colon disease develops when small pouches form in the colon wall and become inflamed, causing pain, fever and abnormal stool function.