What’s causing your rash?
Itchy, scaly, inflamed, red, painful skin — rashes can host an array of irritating symptoms, but it can be equally as annoying not knowing the cause. Ridgeview’s Allergy & Immunology service now offers extended patch testing which includes testing for 88 antigens to help diagnose patients who have a skin condition called allergic contact dermatitis.
According to Ridgeview allergy specialist Alaaddin Kandeel, MBBS, allergic contact dermatitis is commonly present as a rash caused by inflammation from chemicals or metals coming in contact with the skin. Interestingly, an allergic reaction typically does not occur with the first exposure to a substance, but rather with future exposure ― sometimes not developing until years later.
When to consider patch testing
Patch testing is the most accurate test for chemical and metal allergies. “Patch testing is an appropriate choice for an unexplained rash which could be localized or widespread involving the face, eyelids, hands, neck or other body parts, lasting for weeks to months and in some cases even years,” explained Dr. Kandeel.
Extended patch testing evaluates a standard series of 88 allergens which includes certain metals such as nickel and gold, chemicals in cosmetics, nail varnish, medications, gloves, and more. Patch testing can be done at any age; however, because of cooperation concerns, Dr. Kandeel recommends patients to be at least 8 years of age.
What to expect during testing
Patch testing involves applying appropriately diluted allergens to the skin, usually on the back, for 48 to 72 hours. During that time, the patient should not shower or take part in any activity that might cause patches to detach. After 48 hours, the patient returns to have the patches removed and review initial test results. The patient will return for a final reading after 72 to 96 hours.
Patch testing is typically well tolerated except for minor skin irritation and itching. Rarely will the test result in significant skin irritation.
Upon diagnosis, the most common treatment is typically instruction to avoid the irritant. “What is most important is providing the patient with answers and a plan for safe alternatives and options for them to use. Patch testing is a valuable tool in providing those answers,” said Dr. Kandeel.
Ridgeview’s Allergy & Immunology service offers evaluation and treatment for a full range of allergy and immunologic conditions for patients 4 months of age and older.
Learn more
Ridgeview’s Allergy & Immunology team includes board-certified allergist Alaaddin Kandeel, MBBS. He uses the latest advancements and guidelines to develop a treatment plan tailored to your specific needs.
