Conditions list medically reviewed by George Krucik, MD, MBA
Depression is classified as a mood disorder. It may be described as feelings of sadness, loss, or anger that interfere with a person's everyday activities. It is…
A tension headache is the most common type of headache. It can cause mild, moderate, or intense pain in your head, neck, and behind your eyes.
Migraine is a disorder characterized by repeated attacks of severe headache. Symptoms include throbbing or pulsating pain, usually on only one side of the head, and can…
Cluster headaches are severely painful and occur in cycles. Read more for tips on how to treat and relieve them.
Hypoglycemia, or low blood sugar, is a potentially dangerous condition that's most common in people with diabetes. Learn what causes it and how to prevent it.
People who have GAD worry uncontrollably about common occurrences and situations. GAD is different from normal feelings of anxiousness.
Learn more about anxiety with this overview of anxiety disorders.
Acute stress disorder (ASD) may develop after a traumatic event, and it can last up to one month. Learn about the symptoms of ASD.
Meningitis can affect you differently depending on your age. Learn more about the symptoms and risk factors for each age group.
Subarachnoid hemorrhage (SAH) refers to bleeding within the subarachnoid space, which is the area between your brain and the tissues that cover it.
A sinus infection, or sinusitis, is a common condition that affects 30 million people in the United States each year, according to the National Institute of Allergy and…
Whiplash occurs when a person's head moves backward and then forward very suddenly with great force. This injury is most common following a car collision.
Chronic fatigue syndrome (CFS) is a debilitating disorder characterized by extreme tiredness that can't be explained by an underlying medical condition.
Premenstrual syndrome causes a wide variety of emotional and physical symptoms. Learn more about it.
Concussions can cause serious symptoms that require medical treatment. A concussion is a traumatic brain injury that results in an altered mental state.
Encephalitis is inflammation of the brain tissue. It's most often caused by viral infections. In some cases, bacterial infections can also cause encephalitis.
Intracerebral hemorrhage (ICH) is when blood suddenly bursts into brain tissue, causing damage to the brain. Symptoms usually appear suddenly during ICH.
PTSD can affect anyone who has undergone a traumatic event. Read more on how to cope with it.
Menopause is a natural biological process in women that marks the permanent end of menstruation and fertility. Hot flashes, vaginal dryness or pain, and frequent…
Nicotine addiction occurs when a person becomes addicted to nicotine, which is a chemical found in tobacco. The addiction is physical, mental, and behavioral.
This feature is for informational purposes only and should not be used to diagnose. Please consult a healthcare professional if you have health concerns.