Adhesives / plasters allergy
Contact allergy to adhesive plasters and tapes.
About adhesives / plasters allergy
Reactions to sticking plasters and medical tapes are usually a form of allergic contact dermatitis, a delayed, T-cell driven (type IV) response rather than an immediate IgE allergy. This means the rash typically appears 12 to 72 hours after the plaster is applied, not straight away. The culprit is often not the paper or fabric backing but the adhesive resins (such as colophony derivatives or acrylates) or an antiseptic in the dressing. Repeated use, for example after surgery or with insulin pumps and glucose sensors, can encourage sensitisation over time. It is worth noting that some people simply develop a friction or occlusion rash under a plaster, which is irritation rather than true allergy.
The rash tends to mirror the exact shape of the plaster or tape, leaving a sharply outlined patch of itchy, red, sometimes blistered or scaly skin. It is common on the hands, arms and anywhere dressings are used. With continued exposure the skin can become dry, thickened and cracked. People allergic to colophony in adhesives may also react to rosin in other products, such as some cosmetics and glues.
Diagnosis is confirmed by patch testing carried out by a dermatologist, which identifies the specific adhesive or resin responsible; skin-prick testing is not used for this type of allergy. Management centres on switching to hypoallergenic or silicone-based tapes and avoiding the trigger. Flares can be soothed with emollients and, on medical advice, a short course of topical steroid. See your GP if a plaster reaction keeps recurring or the skin becomes broken, weepy or infected.
Common triggers
- Adhesives / plasters and products containing it
Symptoms
- Red, itchy rash (contact dermatitis)
- Dry, cracked or scaly skin
- Blistering or weeping in severe cases
- Burning or stinging where skin met the trigger
Avoidance & management
- Avoid skin contact with the trigger
- Wear gloves or use barrier creams
- Choose products labelled free from the allergen
- Rinse skin promptly after contact
- Use emollients or prescribed steroid creams
Sources & references
Allergy safety: what everyone should know
Mild-to-moderate reaction signs
- Itching, hives or a raised rash
- Swelling of lips, face or eyes
- Tingling mouth, sneezing, runny nose
- Stomach pain, nausea or vomiting
Anaphylaxis — call 999 (UK) or 112 (EU) immediately
- Difficult or noisy breathing, wheeze, persistent cough
- Swelling of the tongue or tightness in the throat
- Dizziness, collapse, pale and floppy (young children)
- Use an adrenaline auto-injector (e.g. EpiPen) at once if prescribed, then call an ambulance even if symptoms improve
Allergy or intolerance? A true allergy involves the immune system and can escalate quickly; an intolerance (e.g. lactose intolerance) is unpleasant but not life-threatening. The symptoms overlap, so self-diagnosis is unreliable.
Getting tested: home-testing kits based on IgG are not diagnostically valid. If you suspect an allergy, ask a GP for referral to an allergy clinic for skin-prick or specific-IgE testing and a supervised food challenge where appropriate.