Same-Day Allergy Care

Mild Allergic Reaction Treatment in Elstree

Same-day assessment of mild and moderate allergic reactions, hives, contact dermatitis, and non-severe reactions to food, medication, or insect stings — by experienced emergency medicine doctors. Adults and children aged 1 and over.

Adult consultation £110 · child consultation £95. If you have any breathing difficulty, throat tightness, swelling of face/lips/tongue, dizziness, or collapse — this is anaphylaxis. Call 999 immediatelyor attend A&E.

When We Can Help

When Same-Day Allergy Care Helps

Common mild and moderate allergic presentations we see — not for anaphylaxis or any reaction with breathing or circulation involvement (those need 999 / A&E).

Hives or urticaria

Itchy, raised, red welts that come and go — often after food, medication, infection, or unknown trigger. Examination, antihistamine guidance, and identification of the most likely trigger.

Contact dermatitis

Red, itchy rash from skin contact with an irritant or allergen (jewellery, plants, cosmetics, cleaning products) — diagnosis, prescription-strength topical treatment, and trigger-avoidance advice.

Mild reaction to a sting or bite

Localised swelling, redness, and itch after a wasp, bee, or insect sting that's painful but not progressing systemically — pain management, antihistamine guidance, monitoring plan.

Drug reaction (mild)

Rash or hives after starting a new medication, with no breathing difficulty or systemic symptoms — assessment, advice on whether to continue or stop the drug (with GP coordination), and antihistamine plan.

Food-related reaction (non-anaphylactic)

Mild rash, itch, or stomach upset after eating, with no airway involvement — assessment and advice. For investigation of suspected food allergy, we'd refer to specialist allergy services via Centennial.

Childhood allergic presentations (1+)

Children with hives, mild eczema flares, or mild allergic rashes — paediatric examination and child-appropriate treatment.

Important Safety Information

When You Should Call 999, Not Us

Anaphylaxis is a medical emergency. Don’t come to us — call 999 or attend A&E directly if any of these apply:

Red flags — 999 immediately:

  • Difficulty breathing, wheezing, or noisy breathing — call 999
  • Swelling of the face, lips, tongue, or throat
  • Difficulty swallowing or feeling like the throat is closing
  • Hoarse voice, drooling, or noisy breathing
  • Widespread rash with feeling faint, dizzy, or collapsing
  • Rapid pulse, paleness, or clamminess with rash
  • Vomiting and severe abdominal cramps with widespread rash
  • Anyone with a known anaphylaxis diagnosis whose adrenaline auto-injector has been used — even if symptoms have improved

For more on anaphylaxis recognition, see NHS guidance on anaphylaxis. If you’re unsure whether your symptoms are mild or severe, treat as severe and call 999 — reactions can progress quickly.

Call 999

Your Visit

What Happens at Your Visit

History and trigger review

When the symptoms started, what you ate, drank, took, or were exposed to in the hours before. Allergy history, current medications, and any previous reactions.

Examination

Skin examination of the affected areas, photographs taken with consent for the medical record, and observation for any developing systemic features.

Treatment plan

  • Examination and trigger identification: Detailed history of timing, food, medication, and exposure, plus skin and respiratory examination. Photographs taken with consent for the medical record where useful.
  • Antihistamine and symptomatic treatment: Non-sedating antihistamines for most acute presentations, with clear dosing and duration advice. Topical steroids for contact dermatitis where appropriate.
  • Trigger-avoidance plan: Identification of the most likely cause where possible, with practical advice on avoidance — common food allergens, contact triggers, medication alternatives discussed with your GP.
  • Onward referral when needed: Suspected anaphylaxis-risk patient (food, drug, or sting allergies with significant reaction history) — referral to specialist allergy services via Centennial. Severe presentation — immediate transfer to A&E.

Transparent Pricing

What It Costs and How Long It Takes

Consultation fee: £110 adult / £95 child — covers the full assessment.

Antihistamines or topical steroid prescription (if needed): private prescription via on-site pharmacy.

Adrenaline auto-injector (if clinically indicated): private prescription.

Time on site: typically 20–40 minutes for a routine consultation.

Insurance: detailed receipts provided.

After Your Visit

Aftercare and Trigger Avoidance

  • Antihistamine dosing schedule and how long to continue
  • Identified or suspected trigger plus practical avoidance advice
  • Topical steroid use instructions for contact dermatitis
  • Specialist allergy referral details if onward investigation is recommended
  • Red-flag symptoms: any breathing change, throat tightness, face/lip/tongue swelling, severe widespread rash with dizziness — this is anaphylaxis, call 999

Common Questions

Common Questions about Allergic Reactions

How do I know if my reaction is anaphylaxis?

Anaphylaxis involves the airway, breathing, or circulation — face/lip/tongue swelling, throat tightness or closing, wheeze or noisy breathing, severe difficulty breathing, dizziness or collapse, vomiting with rash. Any of these means call 999 immediately. Mild reactions stay in the skin (hives, rash, itch) without breathing or circulation involvement, and are safely managed in private urgent care.

If I've used my adrenaline pen, do I still need to be seen?

Yes — go to A&E directly, not to us. Anyone who has needed adrenaline (epinephrine) for a suspected anaphylactic reaction needs hospital observation for at least several hours, because reactions can recur. We're not the right service for post-adrenaline care; A&E is.

Can you prescribe an EpiPen?

Yes, where it's clinically indicated. After a significant allergic reaction, your doctor will discuss whether you should be carrying adrenaline — and if so, can prescribe one and demonstrate use. For complex allergy cases, specialist allergy referral via Centennial is the right pathway for ongoing management and immunotherapy if appropriate.

What if I don't know what caused the reaction?

Common — most acute hives presentations have no clear trigger and resolve on their own with antihistamines. If reactions are recurring, we'd refer to specialist allergy services for proper testing (skin prick, blood IgE) which we don't do on site. Most one-off mild reactions don't need further investigation.

Can you treat my child's allergic reaction?

Yes — children aged 1 and over. Mild reactions in children often respond well to age-appropriate antihistamines. Our doctors are experienced in paediatric urgent care. If the reaction is severe or you're worried about anaphylaxis, call 999 — don't bring them to us.

Do I need to come in for hives that aren't bothering me?

If hives are short-lasting and you're well in yourself, often you don't. Antihistamines from the pharmacy plus monitoring is usually fine. Come and see us if the hives are extensive, persistent for more than a few days, recurring, or accompanied by any concerning symptoms — particularly any breathing changes.

Walk In or Book Online

Same-Day Allergy Assessment

GMC-registered emergency medicine doctors. CQC registered, part of Centennial Medical Care.

Open seven days: Mon–Fri 8am–8pm · Sat–Sun 9am–6pm

Centennial Park, Centennial Ave, Elstree, Borehamwood WD6 3FG · Free parking

Last reviewed: 5 May 2026

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Walk in 7 days a week or book online. Payment taken securely at the time of booking.

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