Foul-smelling diarrhea occurs with a variety of conditions, including certain intestinal infections, malabsorption of dietary fats, and digestive tract bleeding.

Chest tightness and cough occur with many common conditions, including bronchitis, pneumonia, asthma and COPD, among others.

Bloody stool in a child can occur for a variety of reasons. Small anal tears and infections are leading causes, among others.

Zantac is the brand name for ranitidine, a medication that reduces acid production in the stomach. It is used to help prevent or treat conditions caused by excessive amounts of acid, such as ulcers in the small intestine or stomach.

The U.S. is facing one of the worst flu seasons in a decade, and these common mistakes could increase your risk of getting sick.

Ugh. The [dreaded flu](https://www.livestrong.com/article/1011708-cold-flu/). Influenza (the scientific name for the flu) is an upper respiratory infection that can result in symptoms like a dry cough, sore throat, fever, chills, nausea, vomiting and loss of appetite.

CPAP, or continuous positive airway pressure, is a relatively safe and effective treatment for sleep apnea and certain other breathing problems, according to the National Heart Lung and Blood Institute. A CPAP machine blows a steady stream of air into a mask that the patient wears over the mouth and nose.

Stay on top of your health with these essential self-checks every woman should do. From irregular vaginal bleeding to skin changes, learn what to look out for and why regular checks are crucial for maintaining good health.

For runners experiencing pain in the joint of a big toe, the likely cause is hallux rigidus. A type of osteoarthritis, this injury can temporarily stop a runner's training regimen or, in serious instances, can mean a permanent end to running.

Although, as a runner, you might expect to feel soreness or pain in the legs or abdominal muscles, experiencing ovarian pain after a run can cause you to feel concerned. Pain in the ovaries might indicate an ovarian or another gynecological disorder, a medical issue unrelated to the ovaries or a dietary problem.

Although fever is common with strep throat, it is not always present. Other common signs and symptoms include throat discomfort, painful swallowing and swollen neck lymph nodes, among others.

Almost every man will experience pain somewhere in the abdomen at some time during his life. Pain in the lower left side of the abdomen in men may be due to several causes. Digestive tract disorders, such as ulcerative colitis, diverticulitis or colorectal cancer, may be the culprit.