Shellfish allergy is considered to be one of the most common food allergies by MayoClinic.com. Some individuals may have a specific reaction to only certain kinds of shellfish including clams, lobster, shrimp, octopus and squid. Individuals may not be allergic to all of these marine animals. Treatments for allergies to shellfish depend on the severity of the individual's sensitivity. Some individuals may develop a mild rash while others can struggle to breathe.
Oral Antihistamines
A mild allergic reaction to shellfish can consist of a rash, itching or mild respiratory irritation like sneezing or nasal congestion. The rash associated with a mild or moderate allergy is often red, raised and itchy, called hives. MayoClinic.com points out that some individuals can develop eczema, a more persistent inflamed and flakey patch of skin. Oral antihistamines can be taken to treat this mild response. Individuals should discuss the use of an over-the-counter antihistamine to treat a shellfish allergy. These drugs can block the body's response to the shellfish by stopping the production of histamine. Histamine is responsible for fighting off agents the body deems harmful---the mechanism behind allergic reaction. Normally the immune response is helpful for fighting a bacterial or viral infection.
Adrenaline
Anaphylaxis is the most severe type of allergic reaction to shellfish and any other allergen. The symptoms associated with this reaction include trouble breathing, throat swelling, dry cough, chest tightening, lightheadedness and feeling fait suggests MayoClinic.com. Once an individual experiences this form of allergic response it is likely that a portable device containing adrenaline, often called autoinjectable epinephrine, will be recommended by a health care provider for emergency use states the American Academy of Allergy, Asthma and Immunology. Adrenaline can slow the severe reaction the individual is experiencing while medical attention is obtained.
IV and Respiratory Care
Following an anaphylactic reaction to shellfish an individual should receive medical treatment. Observation of the patient, intravenous fluids and sometimes a respirator are all necessary for the period of time following the reaction. These treatment methods can prevent death or other complications from the reaction. If an individual does not have a portable adrenaline injector, a medical professional will likely administer a dose via injection or intravenous line.
