An upper respiratory infection can affect any of the breathing mechanisms of your head and chest, including the nose, throat and sinuses. In addition to difficulty breathing, you may experience a sore throat, nasal congestion, cough, watery eyes, headache and ear stuffiness as a result of this infection.

A hiatal hernia, which occurs when the stomach presses up into the diaphragm, can vary in severity of pain and symptoms. Large hernias often require surgery, but smaller ones may go unnoticed.

The stomach flu, also known as gastroenteritis, is an inflammation of the stomach and intestines caused by a virus, according to the Centers for Disease Control and Prevention (CDC). However, the stomach flu is not caused by an influenza strain.

Monosodium glutamate (MSG) is a sodium derivative of glutamic acid. It is added to many processed food products for its flavor enhancing and preservative properties. Like table salt, MSG can cause water retention and bloating.

Maintaining a healthy liver depends on how well you take care of it. The liver is one of the largest organs in the body and is essential in metabolizing nutrients from foods, regulating digestion and detoxifying harsh substances from the body, notes MayoClinic.com.

Hypoalbuminemia is a condition characterized by low blood levels of albumin. Albumin is simply the proteins that make up human blood plasma. Approximately 60 percent of human blood plasma is comprised of albumin. There are many causes of this disorder such as kidney dysfunction, liver disease and some heart conditions.

According to the U.S. Food and Drug Administration, Singulair is the brand name of a medication called montelukast. It is a leukotrine receptor antagonist that blocks leukotrines. These are chemicals that trigger an allergic response in the human body.

Iodine is a mineral that contributes to thyroid gland function. Your doctor may suggest a low-iodine diet if you have thyroid cancer or before a medical test called a radioactive immunoassay. According to "Essentials of Thyroid Cancer Management," by Robert J. Amdur and Ernest L.

Amoxicillin is one of the drugs in the beta-lactam antibiotic family, according to the Mayo Clinic. It is used to treat bacterial infections.

An interscalene nerve block is a form of local anesthetic used prior to shoulder surgery. This anesthetic is applied to specific nerves within the shoulder by an anesthesiologist using a thin needle.

Cardiomegaly is an enlarged heart and a symptom of cardiomyopathy, or disease of the heart. Cardiomegaly occurs from multiple causes, and poorly controlled high blood pressure is a common factor.

There are numerous causes of hand and foot tingling, and tingling in the extremities is often accompanied by numbness. According to the U.S.