Conditions list medically reviewed by George Krucik, MD, MBA
Meningitis can affect you differently depending on your age. Learn more about the symptoms and risk factors for each age group.
Learn about migraine types, symptoms, triggers, and treatments as well as how they are different from regular headaches.
Food poisoning occurs when you consume foods contaminated with bacteria, viruses, or parasites. Symptoms are usually uncomfortable but not severe.
Common colds and influenza are contagious infections that affect the respiratory system. Both are airborne illnesses, spread through coughing and sneezing. Shared…
Encephalitis is inflammation of the brain tissue. It's most often caused by viral infections. In some cases, bacterial infections can also cause encephalitis.
Subarachnoid hemorrhage (SAH) refers to bleeding within the subarachnoid space, which is the area between your brain and the tissues that cover it.
Malaria is a life-threatening disease that's typically transmitted through the bite of an infected Anopheles mosquito. Learn more about symptoms, diagnosis, and…
Glaucoma is an eye condition that damages your optic nerve. Learn what causes it.
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.
Learn about what causes allergies, the different types of allergies, and how they're treated.
Labyrinthitis is an inner ear disorder in which a nerve that detects head movement becomes inflamed. Here's how it's treated.
An aneurysm in the brain is a weak area in an artery in the brain that bulges out and fills with blood. It can be unpredictable and life-threatening, and can cause…
Strep throat is a bacterial infection that causes inflammation and pain in the throat. This common condition is caused by group A Streptococcus bacteria.
Malignant hypertension is a rare and severe condition in which blood pressure is dangerously high. Learn more about symptoms and treatments.
HELLP syndrome is a group of symptoms that can develop in pregnant women. Learn about HELLP syndrome, risk factors, diagnosis, and treatment.
Menstruation occurs when the uterus sheds its lining once a month. The lining passes through a small opening in the cervix and out through the vaginal canal.
Diabetic ketoacidosis (DKA) is a serious complication of type 1 diabetes, though it can also rarely be seen in people with type 2 diabetes.
Tonsillitis can occur at any age and is a common childhood ailment. It is most often diagnosed in children from preschool age through their midteens.
A brain tumor is the growth of abnormal cells in your brain. Whether the growth is cancerous or not, any brain tumor is serious. Symptoms can include both cognitive and…
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.
This feature is for informational purposes only and should not be used to diagnose. Please consult a healthcare professional if you have health concerns.