NyQuil can be used to treat the symptoms of a cold or the flu. Several varieties of the over-the-counter medication are available, each containing different combinations of medicines. A variety of symptoms may occur with a NyQuil overdose, depending on which type was taken and the amount.

Approximately 1.5 million people in the United States were diagnosed with cancer in 2009, report health officials at the American Cancer Society.

A dry, hacking cough is a symptom associated with several different illnesses and allergies. Treating the underlying cause can help relieve the dry, hacking cough over time but when the illness is viral, medicines can't kill the infection.

A cool mist humidifier increases the humidity in a room. A humidifier is a useful device to help relieve congestion from allergies, colds and other respiratory ailments. It can also help to alleviate itchy eyes, dry skin and cracked lips caused by low humidity, especially in the dry, winter months.

Influenza, or flu, is a viral infection that attacks the respiratory system, the Mayo Clinic says. The flu presents with a variety of symptoms including a high fever, nasal congestion and muscular aches. Earaches are not commonly associated with flu symptoms unless complications of the virus occur.

An estimated 5 percent of the population of the United States has a thyroid gland that functions poorly, a condition called hypothyroidism, the National Endocrine and Metabolic Diseases Information Services reports.

Coughing is the body’s way of expelling an irritant in the throat and airways, and can be caused by many factors, including allergies, asthma, pneumonia, flu, colds and postnasal drip.

The flu is a respiratory illness that is caused by a virus known as the influenza virus. The flu isn’t the same viral illness as a cold, but they share some of the same symptoms.

Leg spasms and muscle cramps can be symptoms of certain infections such as the flu. If your sickness is causing diarrhea or vomiting, you could also suffer from an electrolyte imbalance which can cause leg spasms.

Saline nasal spray has several advantages over steroid nasal sprays and over no treatment at all. Saline sprays can be used to moisturize dry sinus cavities, loosen nasal congestion, and remove debris or pollens from the nose. Water and salt or sodium comprise the spray.

If you get flu-like symptoms, such as vomiting and diarrhea, after eating chicken, it's likely that the chicken was undercooked and was infected with either salmonella or campylobacter.

The influenza virus, usually referred to simply as the flu, is common and profoundly contagious. It can cause serious complications in infected individuals, especially children.