You are likely allergic to plasters because of an allergy to one or more of the materials used in their construction, most commonly the adhesive.
Common Allergens in Plasters
The following are common culprits behind plaster allergies:
-
Adhesive: This is the most frequent cause. Some adhesives contain:
- Rubber/Latex: Many plasters use rubber-based adhesives, which contain latex. A latex allergy is a well-known trigger for skin reactions.
- Acrylic Adhesives: While often considered hypoallergenic, some individuals can still react to specific acrylic compounds.
- Colophony (Rosin): Derived from tree resin, colophony is sometimes used to improve the stickiness of adhesives.
-
Material of the Plaster Pad: While less common than adhesive allergies, some people react to the material of the pad itself, especially if it contains dyes or fragrances.
Symptoms of a Plaster Allergy
A plaster allergy typically manifests as contact dermatitis at the site where the plaster was applied. Symptoms may include:
- Redness
- Itching
- Burning sensation
- Small bumps or blisters
- Dry, cracked skin
Diagnosis and Treatment
If you suspect a plaster allergy, consider the following:
- Identify the Allergen: Try using different brands of plasters to see if the reaction persists. Look for plasters labeled "hypoallergenic" or "latex-free."
- Patch Testing: A dermatologist can perform a patch test to identify the specific allergen causing your reaction.
- Symptom Relief:
- Wash the affected area gently with mild soap and water.
- Apply a topical corticosteroid cream (like hydrocortisone) to reduce inflammation and itching.
- Consider using an oral antihistamine to relieve itching.
- Alternatives: Use alternative wound coverings like gauze and hypoallergenic tape.
When to See a Doctor
Consult a doctor if:
- Your symptoms are severe or worsen.
- You develop signs of infection (e.g., pus, increased pain, fever).
- Over-the-counter treatments don't provide relief.
