Allergic reactions to 14 karat gold earrings and other metal jewelry are fairly common. Signs and symptoms can appear soon after exposure to new jewelry, or may develop over time as the metal on your earrings wear down.

Juniper trees are a common source of allergies due to the pollen they create. Individuals with a juniper allergy are said to have seasonal allergies, meaning the symptoms flare up only when the tree is producing pollens.

About 6.6 million Americans are allergic to seafood, which can include shellfish and other types of fish such as tuna, according to a study in the July 2004 issue of the “Journal of Allergy and Clinical Immunology.” Seafood allergy is lifelong, and if you are allergic to tuna you may also have allergies to other fish.

Grass allergy rates in the top three pollen allergies along with ragweed and birch tree allergies. People with pollen allergies develop allergic rhinitis, a reaction triggered by the pollen of certain plants as it is released into the air.

Histamine naturally occurs in the body and is released during allergic reactions and times of stress. Histamine is also present in certain foods and is broken down by the enzyme diamine oxidase.

Lactose intolerance may cause stomach upset and other intestinal problems when you consume dairy products such as milk, cheese and yogurt. If you have an allergic reaction to a component in dairy, you could have other symptoms that may include swollen eyelids.

When exposed to infection or injury, your body responds defensively, by unleashing an immune response that results in the release of fluids, antibodies and white blood cells to the affected area.

Claritin, a brand name of loratadine, is an over-the-counter (OTC) medication used for the relief of symptoms of seasonal allergies. It is also used to treat chronic itching of unknown cause. This drug is classified as an antihistamine.

Peppermint is a plant that used primarily for use in cooking and as a dietary supplement. The herb is used in candy, hot chocolate and other baked goods. As a supplement, peppermint has been used to treat digestive conditions and depression but may cause adverse reactions in some people.

People who develop sensitivities to pine allergens can have allergic reactions from touching, inhaling or consuming these allergens. Pine species with light pollen grains may cause hay fever symptoms, whereas heavy sap is more apt to produce allergic manifestations upon contact with skin.

People who develop bacterial infections of the ear, skin, lungs, urinary tract or sinuses may experience relief from uncomfortable symptoms following treatment with Augmentin. Augmentin is a prescription medication that contains two active ingredients: amoxicillin and clauvulanate potassium.

Allergy is a condition in which the immune system reacts to harmless particles like dust and pollen, causing symptoms like sneezing and congestion. Allergies and sinus symptoms often go hand-in-hand and can cause much misery for sufferers.