Conditions list medically reviewed by George Krucik, MD, MBA
An abnormal heart rhythm is when your heart beats too fast, slow, or irregularly. This is also called an arrhythmia. Within the heart is a complex system of valves…
Congestive heart failure (CHF) is a chronic condition that affects the chambers of your heart. Learn more about CHF, including symptoms and risk factors.
Anaphylaxis can occur when you have a severe reaction to certain allergens. Learn what the symptoms are and what to do if this happens.
Pneumothorax, or collapsed lung, occurs when air is trapped in the space around your lungs. Learn about the types of pneumothorax and the treatment for it.
Panic disorder occurs when you live in fear of a panic attack. You may be having a panic attack when you feel sudden, overwhelming terror with no obvious cause.
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.
A pulmonary embolism is a blood clot that occurs in the lungs. It can damage part of the lung and other organs and decrease oxygen levels in the blood.
Bleeding, or hemorrhage, is the name used to describe blood loss. It can refer to blood loss inside the body, called internal bleeding. Or it can refer to blood loss…
Atrial fibrillation and flutter are irregular heart rhythms that occur when the upper chambers of the heart beat irregularly or too fast. Fibrillation can be sustained…
An adrenergic bronchodilators overdose is when you take too much of a certain kind of asthma medication.
People with paroxysmal supraventricular tachycardia experience a faster-than-normal heart rate. Learn more about the symptoms, treatments, and outlook.
Septic shock is a complication of an infection. It can cause inflammation and could become life-threatening.
Cardiogenic shock occurs when the heart has been damaged to the point where it's unable to supply enough blood to the organs of the body.
Hypovolemic shock (hemorrhagic shock) is a life-threatening condition that results when you lose more than 20 percent of your body's blood or fluid supply, preventing…
Hypertensive heart disease refers to heart conditions caused by high blood pressure. Possible symptoms of acute hypertension include sweating and chills.
Infectious mononucleosis, or mono, refers to a group of symptoms usually caused by the Epstein-Barr virus (EBV).
High blood pressure is often associated with few or no symptoms. Many people have it for years without knowing it.
Red blood cells are normally shaped like discs, which allows them to travel through blood vessels. Sickle cell disease causes red blood cells to be sickle-shaped. Read…
A ventricular septal defect (VSD) is a hole between your heart's lower chambers, or ventricles. Read more about this condition.
A dissection of the aorta means that blood has entered the wall of the artery between the inner and middle layers. It can be serious if the aorta ruptures.
This feature is for informational purposes only and should not be used to diagnose. Please consult a healthcare professional if you have health concerns.