Summer outdoor time with young children brings insect bites with predictable regularity. Most are a minor nuisance: a red itchy bump, some fussing, a small plaster. A small minority cause reactions that require more attention.
The aspect of insect bites and stings that genuinely matters medically is recognising the difference between a larger-than-usual local reaction (swelling around the bite site that extends a few centimetres) and a systemic allergic reaction involving parts of the body distant from the bite. One is uncomfortable but harmless; the other can be life-threatening.
Healthbooq (healthbooq.com) provides guidance on outdoor safety and common childhood health events through the early years.
Bee and Wasp Stings
Bee stings leave a stinger in the skin, which continues releasing venom until removed. Remove it by scraping horizontally with a firm edge (a credit card works well, as do fingernails) rather than pinching and pulling, which squeezes more venom from the attached venom sac.
Wasp stings do not usually leave a stinger.
After removing any stinger, wash the area with soap and water, apply a cold compress to reduce swelling and pain, and give paracetamol or ibuprofen if needed. A non-drowsy antihistamine (cetirizine or loratadine are the commonly available UK options) will reduce itching and swelling if significant.
Distinguishing Local from Systemic Reactions
Large local reactions to stings are common and do not indicate allergy in the severe sense. A bee sting on the hand that produces swelling of the entire hand and forearm, while dramatic, is a local reaction. It may be impressive and very uncomfortable, but it is not anaphylaxis and does not in itself indicate future risk of severe allergy.
Systemic reactions involve symptoms in parts of the body away from the sting site. These include: hives or flushing over the body, swelling of the lips, tongue or throat, difficulty breathing or swallowing, stomach pain and vomiting, dizziness or faintness. These are signs of anaphylaxis.
Call 999 immediately if there are any signs of a systemic reaction. If the child has been prescribed an adrenaline auto-injector, use it immediately and call 999.
A child who has had a confirmed systemic reaction to an insect sting should be referred to an allergy specialist for assessment and venom immunotherapy (a desensitisation treatment) may be appropriate.
Mosquito Bites
Mosquito bites cause the familiar itchy bump through a local inflammatory response to the mosquito's saliva. In the UK, mosquitoes do not carry malaria, dengue, or other tropical vector-borne illnesses, so UK mosquito bites pose no infectious disease risk.
For very itchy bites, a mild topical corticosteroid cream (hydrocortisone 1%, available from pharmacies) applied for one to two days reduces the itch effectively. Antihistamine can also help. Avoid encouraging scratching which risks introducing infection.
Children who will travel to malaria-endemic areas need appropriate antimalarial prophylaxis; seek GP or travel clinic advice well before departure.
Tick Bites
Tick bites require specific management because of the risk of Lyme disease, a bacterial infection transmitted by certain tick species found in the UK, particularly in woodland, heath, and grassland areas.
Remove a tick as soon as it is found, using fine-tipped tweezers or a proprietary tick removal tool. Grasp the tick as close to the skin as possible and pull steadily upward without twisting. Do not use petroleum jelly, heat, or burning to remove ticks; these methods cause the tick to regurgitate and increase infection risk.
After removal, clean the bite site with alcohol or soap and water.
The rash of Lyme disease (erythema migrans) typically appears one to four weeks after the tick bite. It starts as a small red mark at the bite site and expands outward, often with a pale clearing in the centre producing a bull's eye appearance. Not all Lyme disease presents with this classic rash. Other early symptoms include fatigue, muscle ache, headache, and fever.
Contact your GP if you notice any rash following a tick bite, or if a child develops unexplained flu-like symptoms in the weeks after a potential tick exposure. Lyme disease is treated effectively with antibiotics in its early stages.
Tick prevention: covering skin and using DEET-based insect repellent (appropriate concentration for age, typically 50% DEET for children over 2 months) when in tick habitats, checking skin and clothing after time in tick areas, and showering after outdoor time, all reduce tick bite risk.
Key Takeaways
Most insect bites and stings in children cause localised pain, redness, and swelling that resolves within a day or two and needs only basic first aid. Allergic reactions range from a larger localised response (non-concerning) to anaphylaxis (a medical emergency). Distinguishing between a large local reaction and early systemic reaction is the critical clinical skill for parents. Tick bites require careful removal with fine-tipped tweezers and monitoring for the rash of Lyme disease. Children who have had a systemic allergic reaction to a sting need specialist assessment and may need prescribed adrenaline auto-injectors.
