Beef allergies affect an estimated 3 percent to 6.5 percent of children, including one of every five children allergic to cow milk, according to a 2001 report from the Internet Symposium on Food Allergen's Matthew Belser and colleagues. Most children outgrow their allergies within three years.

Irritable bowel syndrome, or IBS, is an intestinal condition that affects up to 15 percent of the U.S. population. IBS typically begins in your teens or early 20s and causes intermittent bouts of abdominal pain and altered bowel movements.

Your scalp is part of the body's biggest organ: the skin. Some people with food allergies, including dairy allergy, report an itchy scalp and other skin irritations, ranging from rashes to eczema. Eczema is a chronic disorder that features long-term inflammation of the skin.

Colitis is an inflammatory bowel disease. There are several types of colitis, depending on the location of the inflammation. Symptoms vary but commonly include abdominal cramps, bloating, constipation and diarrhea. There's really no nutritional therapy for colitis, nor is there a cure.

Some vitamins may help boost the immune system and reduce the severity of sinus problems and allergies. Sinusitis is the swelling of the nasal sinuses and typically occurs from a cold or infection, says the American Academy of Allergy, Asthma and Immunology.

Food with gluten will not irritate gastritis unless you have an underlying condition that causes an adverse reaction to gluten. If you notice that whenever you eat foods that contain wheat you develop gastric symptoms, you need to see your doctor for a clinical diagnosis.

Food allergies are common with certain foods, such as peanuts, milk and eggs, but virtually any food has the potential to cause an allergic reaction.

Seasonal inhalant allergies can make you feel like you’re sick but will not cause sickness. It’s difficult to distinguish between allergy symptoms and the common cold because the two conditions cause similar reactions in the body.

When rashes and headaches appear suddenly, one likely cause is an allergic reaction. Allergies can cause rashes and headaches ranging from minor irritation to painful and frightening attacks. A wide variety of allergies can cause these types of reaction.

Iodine is a mineral used topically for antibacterial purposes or intravenously as a component of radiological contrast agents. Iodine is necessary to support healthy thyroid functioning.

Food allergies affect approximately 2 percent of adults, and between 4 and 8 percent of children, reports the University of Maryland Medical Center. While cherries are not one of the top eight food allergens, they do cause allergic reactions in some people, particularly those with pollen allergies.

Food allergies occur when your body views a substance as a foreign intruder that must be eliminated, causing your body to respond much in the same way it does to a virus or bacteria. Chemicals called histamines are released that cause everything from itchy skin to coughing and stomach pain.