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

Jun 13, 2020 · Pneumonia is an infection that inflames the air sacs in one or both lungs. The air sacs may fill with fluid or pus (purulent material), causing cough with phlegm or pus, fever, chills, and …

Jul 21, 2025 · Who's at risk of developing statin side effects? Not everyone who takes a statin will have side effects, but some people may be at a greater risk. Risk factors include: Taking multiple …

Mayo Eugenio Litta Children's Hospital is a pediatric "hospital within a hospital" — located within Mayo Clinic Hospital, Saint Marys Campus. It is a 148-bed hospital where infants, children and teenagers, …

Apr 10, 2024 · Overview Amyotrophic lateral sclerosis (a-my-o-TROE-fik LAT-ur-ul skluh-ROE-sis), known as ALS, is a nervous system disease that affects nerve cells in the brain and spinal cord. ALS …

The right answers the first time Effective treatment depends on getting the right diagnosis. Our experts diagnose and treat the toughest medical challenges. The world's best hospital Mayo Clinic is the No. …

Jun 18, 2024 · Kratom is an herbal extract that comes from the leaves of an evergreen tree called Mitragyna speciosa. The tree grows in Southeast Asia. Kratom users can chew the tree's leaves, …

Nov 1, 2024 · Multiple sclerosis is a disorder in which the body's immune system attacks the protective covering of the nerve cells in the brain, optic nerve and spinal cord, called the myelin sheath. And …

Learn about symptoms of urinary tract infections. Find out what causes UTIs, how infections are treated and ways to prevent repeat UTIs.

Nov 16, 2024 · Raynaud's disease causes smaller blood vessels that supply blood flow to the skin to narrow in response to cold or stress. The affected body parts, usually fingers and toes, might turn …