In-depth

Causes

Diabetic hypoglycemia

Diabetic hypoglycemia — Comprehensive overview covers causes, symptoms and treatment of low blood sugar.

Heart arrhythmias

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

Symptoms

Fatigue

Fatigue can signal many things. Here are some tips to help you decipher why you're wiped out and to regain your energy.

Hyperglycemia in diabetes

Hyperglycemia in diabetes — Comprehensive overview covers causes, symptoms and treatments of high blood sugar.

Nausea and vomiting

Sick to your stomach? Nausea and vomiting usually pass quickly but sometimes result from long-term or serious conditions.

Shortness of breath

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

Tachycardia

Tachycardia, a rapid heart rate, is caused by an abnormality in your heart's electrical impulses. Tachycardia can cause serious complications, including sudden cardiac arrest.

Tests and diagnosis

Blood urea nitrogen (BUN) test

A blood urea nitrogen (BUN) test is used primarily to diagnose kidney disorders. It can also be helpful in detecting other medical problems.

Creatinine test

A creatinine test reveals important information about your kidneys. Find out what the results of this common blood test mean for you.

Jun. 19, 2012