Browse a comprehensive list of medical diseases and conditions that start with the letter A from the experts at Mayo Clinic.

Apr 8, 2025 · Many infectious diseases, such as measles and chickenpox, can be prevented by vaccines. And other illnesses, such as COVID-19, might make you less sick if you get vaccinated.

May 19, 2025 · Bobbi Pritt, M.D., is director of the Clinical Parasitology Laboratory and co-director of the vector-borne diseases laboratory service at Mayo Clinic in Rochester, Minnesota.

Aug 13, 2024 · Learn about symptoms, causes and treatment of cardiovascular disease, a term describing a wide range of conditions that can affect the heart.

Apr 9, 2025 · Rheumatoid arthritis in-depth. National Institute of Arthritis and Musculoskeletal and Skin Diseases. https://www.niams.nih.gov/health-topics/rheumatoid-arthritis. Accessed Aug. …

Learn about the history of major disease outbreaks, epidemics and pandemics, as well as the impact vaccines and research had on many infectious diseases. Find out more at History of …

Dec 4, 2025 · Gastroenterology & GI Surgery Blog Connect with others and follow the latest advances in treating Crohn's disease and ulcerative colitis on Mayo Clinic Connect. Crohn's …

Jul 10, 2024 · Immune system diseases, such as rheumatoid arthritis or Crohn's disease. Other diseases requiring medicines, called monoclonal antibodies, that are based on the same basic …

May 8, 2025 · Insects can carry a variety of serious diseases and under the circumstances I think you should have an exam and some lab work, particularly a CBC and metabolic panel.

Sep 20, 2025 · Diagnosis & treatment Diseases & Conditions Laryngitis - Symptoms & causes - Mayo Clinic