Conditions list medically reviewed by George Krucik, MD, MBA
Learn more about anxiety with this overview of anxiety disorders.
Allergic rhinitis, or hay fever, is your body's response to specific allergens. It causes uncomfortable symptoms like sneezing and itchy eyes.
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.
People who have GAD worry uncontrollably about common occurrences and situations. GAD is different from normal feelings of anxiousness.
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.
Swine flu, or H1N1, is highly contagious and can spread quickly from person to person. A simple sneeze may cause thousands of germs to spread through the air.
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).
Acute bronchitis causes coughs that produce mucus. You don't need antibiotics, but bed rest and home care can help.
The recommended amount of caffeine is usually 400 mg per day for healthy adults. Caffeine overdose may occur if you ingest more than this amount.
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 about carbon monoxide poisoning and what causes it. Find information on carbon monoxide symptoms, diagnosis, treatment, and prevention.
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 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.
Acute mountain sickness is a condition that occurs when your body can't adjust to a high level of altitude. Learn more about the signs and how to treat it.
Paroxysmal nocturnal hemoglobinuria (PNH) is a rare disorder that causes red blood cells to break down sooner than they should.
This feature is for informational purposes only and should not be used to diagnose. Please consult a healthcare professional if you have health concerns.