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Health guidanceUnited Kingdom with regional context

Can a tick bite cause an allergic reaction?

Allergic reactions can occur; rapid widespread hives, facial or throat swelling, breathing difficulty, dizziness or collapse require emergency care.

Reviewed by VuxLore® Knowledge Team For Everyone

Short answer

Allergic reactions can occur; rapid widespread hives, facial or throat swelling, breathing difficulty, dizziness or collapse require emergency care.

At a glance

Allergic reactions can occur; rapid widespread hives, facial or throat swelling, breathing difficulty, dizziness or collapse require emergency care. A bite cannot be diagnosed from appearance alone; record it and seek assessment for concerning change.

Key takeaways

• Allergic reactions can occur; rapid widespread hives, facial or throat swelling, breathing difficulty, dizziness or collapse require emergency care.

• A bite cannot be diagnosed from appearance alone; record it and seek assessment for concerning change.

• This article is educational and cannot diagnose, exclude or treat illness. Use NHS 111, a GP, emergency services or the corresponding local service according to symptom severity.

Direct answer

Allergic reactions can occur; rapid widespread hives, facial or throat swelling, breathing difficulty, dizziness or collapse require emergency care.

Use it in context

A bite cannot be diagnosed from appearance alone; record it and seek assessment for concerning change.

Practical next step

This article is educational and cannot diagnose, exclude or treat illness. Use NHS 111, a GP, emergency services or the corresponding local service according to symptom severity.

Sources and further reading

NHS: Lyme disease

National Institute for Health and Care Excellence: Lyme disease: diagnosis and management (NG95)

UK Health Security Agency: What is Lyme disease and how is it diagnosed and treated?