Conditions list medically reviewed by George Krucik, MD, MBA
Common colds and influenza are contagious infections that affect the respiratory system. Both are airborne illnesses, spread through coughing and sneezing. Shared…
Pneumonia is an infection of the lungs caused by fungi, bacteria, or viruses. General symptoms include chest pain, fever, cough, and trouble breathing.
Find information about chemical burns and how to prevent them. Learn about the causes, symptoms, and treatment of chemical burns.
High blood pressure is often associated with few or no symptoms. Many people have it for years without knowing it.
A deviated septum may cause health complications such as difficulty breathing. Learn more about the causes, symptoms, treatments, and more.
Are your cold symptoms lasting longer than a week? Do you have walking pneumonia? Learn how to treat and prevent this condition.
Learn about what causes allergies, the different types of allergies, and how they're treated.
Infectious mononucleosis, or mono, refers to a group of symptoms usually caused by the Epstein-Barr virus (EBV).
Diabetic ketoacidosis (DKA) is a serious complication of type 1 diabetes, though it can also rarely be seen in people with type 2 diabetes.
Learn how people often react to black widow spider bites. Read about how they can be treated and avoided.
Tuberculosis (TB) is a highly infectious disease that primarily affects the lungs. Read more on whom it affects and how to treat it.
Learn about carbon monoxide poisoning and what causes it. Find information on carbon monoxide symptoms, diagnosis, treatment, and prevention.
Learn about sarcoidosis and its causes, symptoms, diagnosis, treatment, and potential complications.
Parrot fever is a rare infection caused by Chlamydia psittaci, a specific type of bacteria. The infection is also known as parrot disease and psittacosis.
Paroxysmal nocturnal hemoglobinuria (PNH) is a rare disorder that causes red blood cells to break down sooner than they should.
Poliomyelitis, or polio, is a highly contagious disease that is caused by a virus that attacks the body's nervous system.
Histoplasmosis is a type of lung infection. It is caused by inhaling fungal spores. Spores are found in soil and in the droppings of bats and birds.
Legionnaires' disease is a severe type of pneumonia, or lung infection. Learn about its symptoms, causes, treatment, and prevention.
Severe acute respiratory syndrome (SARS) is a serious form of viral pneumonia. The virus that causes SARS was first identified in 2003.
Polycythemia vera is a bone marrow disorder in which the body produces too many red blood cells. Here's what you need to know about this rare condition.
This feature is for informational purposes only and should not be used to diagnose. Please consult a healthcare professional if you have health concerns.