Skin Allergies

Skin allergy is an allergic reaction to typically harmless substances such as wool, pollen, soap, or plants. These substances are called allergens. Skin allergies (also called allergic contact dermatitis) occur when your skin comes in contact with an allergen that your skin is sensitive to. Allergic skin rashes can have causes that aren’t due to underlying diseases. There is a variety of factors that can cause skin allergy including immune system disorders, medication, and injections when an allergen is responsible for triggering an immune system response then it is an allergic skin condition. Contact dermatitis most common form of skin allergy occurs when the skin reacts to something that it has touched.

Symptoms: may include

  • Skin rash
  • Skin redness
  •  Itching

How long does it take to develop an allergy :

It depends from person to person it may take a few hours to days for a skin allergy to develop. With treatment, it takes 2-4 weeks to resolve.

Types of skin allergies :

Contact dermatitis :

Irritant contact dermatitis: Caused by chemicals, Poison Ivy (plant), insect bite.

Allergy contact dermatitis: Caused by air-borne allergy-like Pollen, dust particles, smoke, animal dander, fungal spores, house dust, etc, or contact allergen like metals, jewelry, etc.

Skin allergy can also manifest as hives or swelling of deeper tissues. Skin allergies are not contagious and cannot be spread by touching or close contact. They can be prevented by avoiding the triggering agent.

How to evaluate a patient with skin allergy?

It can be done by doing certain routine investigations like Prick test, Patch test (which has many limitations, It’s a hypersensitivity test to an allergen like it’s very cumbersome, a limited number of allergens can be tested), and blood test which is done by ELISA immunoassay. In this IgE antibodies are detected to a variety of food allergens, contact allergens, and inhalant allergens.