In-depth

Causes

Allergies

Allergy symptoms can make you miserable and in some cases, they're life-threatening. Here's some information about allergies — and tips on treating allergy symptoms.

Cold urticaria

Does your skin become itchy and red when exposed to cold? You may have cold urticaria.

Drug addiction

Drug addiction is the compulsive dependence on a legal or illegal drug. Treatment and a strong support system may help break an addiction.

Drug allergy

Drug allergy can occur with many medications. Find out what you can do to recognize and avoid potentially dangerous reactions.

Heart arrhythmias

A heart arrhythmia is an abnormal heart rhythm. Arrhythmias can be a byproduct of damage to the heart from disease or age.

Heart disease

Heart disease, usually thought of as blockages in the arteries that can cause a heart attack, can describe any medical condition affecting your heart.

Hyperthyroidism

Hyperthyroidism occurs when your thyroid gland produces too much of the hormone thyroxine — speeding up your metabolism and sometimes leading to serious complications.

Hypothermia

Hypothermia, a lower than normal body temperature, requires first aid and medical care to lessen heat loss, warm the body and prevent death.

Iron deficiency anemia

Iron deficiency anemia may leave you feeling sapped of energy. This condition is especially common in women. Iron supplements usually help.

Pituitary tumors

Pituitary tumors are abnormal growths in the pituitary gland in the brain. Most are noncancerous (benign). Some may cause overproduction of hormones and associated problems.

Complications

Amniotic fluid embolism

Amniotic fluid embolism — Overview covers definition, symptoms and treatment of this pregnancy or post-pregnancy condition.

Dehydration

You normally lose about 10 cups (2.4 liters) of water every day — much more during exercise or illness. Learn how to stay hydrated.

Generalized anxiety disorder

Don't be a captive of your worries and fears. Control your anxiety by seeking treatment and learning coping skills.

Guillain-Barre syndrome

Guillain-Barre syndrome may cause severe weakness, numbness or paralysis — starting in the extremities and often spreading throughout the entire body.

Heart failure

Heart failure means your heart can't efficiently pump blood throughout your body. Medications, and sometimes devices or surgery, can help you manage this condition.

Pectus excavatum

Pectus excavatum — Comprehensive overview covers symptoms, complications of this deformity of the chest.

Pericardial effusion

Pericardial effusion, the accumulation of excess fluid in the sac-like structure around the heart, can decrease heart function and can be life-threatening.

Sepsis

Most cases of sepsis don't cause serious problems. But severe sepsis and septic shock can lead to death if not treated promptly.

Spontaneous coronary artery dissection

Find out about this rare cause of heart attack in young, healthy people.

Ventricular fibrillation

Ventricular fibrillation is a life-threatening heart rhythm disturbance that requires immediate treatment. Find out more.

Prevention

Alcohol use

Drinking alcohol might offer some health benefits. But that's only if you drink responsibly and in moderation.

Fitting in fitness

Finding time for fitness can be tough. Start by making it convenient.

How to say no

Discover why saying no may be the single most important strategy you can use for stress relief.

Ingredient substitutions

Healthier recipes may be as close as your own pantry. See which ingredient substitutions you can make to improve your diet.

Risk factors

Panic attacks

Panic attacks can make you feel like you're having a heart attack. Learn how to manage these intense bursts of fear.

Symptoms

Dizziness

Dizziness is one of the most common health concerns. However, few cases of dizziness are due to serious conditions.

Heart palpitations

Heart palpitations are skipped, fluttering or racing heartbeats that aren't usually a symptom of a serious heart problem. Discover the causes and symptoms of this condition.

Shortness of breath

Shortness of breath can be frightening. Most of the time, a heart or lung condition is the cause.

Vasovagal syncope

Vasovagal syncope (fainting) is a sudden and brief loss of consciousness that occurs when the blood flow to your brain is markedly reduced.

Tests and diagnosis

Electrocardiogram

An electrocardiogram (ECG or EKG) is a test that provides valuable clues about your heart health. Here's what you need to know about the test.

Tilt table test

A tilt table test is used to investigate the cause of fainting (syncope).

Treatments and drugs

Cardiac ablation

Cardiac ablation is a procedure that destroys some heart tissue to treat an arrhythmia. Find out more.

Cardioversion

Cardioversion is a procedure to restore a normal heart rhythm for people who have arrhythmias. Find out more.

Implantable cardioverter-defibrillator

Implantable cardioverter-defibrillators (ICDs) can control abnormal, life-threatening heart rhythms and prevent cardiac arrest.

 

Pacemaker

A pacemaker can correct a heartbeat that's too slow. Find out the risks, results and recovery time of the procedure to implant a pacemaker.

May. 25, 2011