Insect Bites and Stings: How to Prevent Them and What to Do if You’re Bitten

How to Prevent Painful Bites and Manage Severe Reactions Fast

A wasp sting can ruin your enjoyment of an outdoor lunch, while mosquito bites will keep you awake at night, itching - both are the uncomfortable consequence of warmer summer weather. If you’re a parent protecting the sensitive skin of your children, or if you experience allergic flare-ups, knowing how to respond quickly can help you to enjoy your time outdoors without worrying.

Most bites heal safely without complication, but applying the right care early on will speed up recovery and protect you against secondary infections. 121 Pharmacy’s practical guide is all about helping you to prevent insect bites, sooth itchy bites at home, and recognise the warning signs that you need a doctor to take a look.

Why Bites Itch and Stings Hurt - It’s Your Immune Response

When an insect bites or stings, the pain or itch you feel is your immune system jumping into action. Insects such as mosquitoes, midges, and horseflies leave behind traces of saliva as they feed, while bees, wasps, and hornets inject venom into the skin. In response, your body releases histamine to protect the tissue, which creates the inflammation, heat, swelling, and persistent itching we’ve all experienced at some point.

Because individual immune sensitivities vary, reactions differ significantly. A bite that barely leaves a mark on one person can produce swelling in a child or an extreme reaction in someone prone to allergies. Most localised reactions settle safely with standard home treatments, however, monitoring how the inflammation behaves allows you to spot when a reaction needs clinical attention.

Practical Steps to Prevent Bites and Stings

The best way to avoid painful swelling or severe allergic reactions is to prevent contact entirely. All the following strategies will protect yourself and your family:

• Use clinically proven repellents - Choose sprays formulated with established active ingredients - specifically DEET, picaridin, IR3535 or PMD. For high-risk areas or tropical travel, use high-strength protection such as Jungle Formula Aerosol Extra (50% DEET). Always spray into your hands first before applying to a child's face, avoiding the eyes and mouth.
• Wear the right clothes - When you’re walking through woodland, tall grass, or heathland, wear long sleeves and tuck your trousers into socks to block ticks. Choose light-coloured fabrics so dark ticks and insects are instantly visible before they reach the skin.
• Take care with outdoor food and drinks - Wasps are drawn to sugars and proteins. Keep picnic food sealed, and never drink directly from open cans or opaque bottles left outside - insects can crawl inside unnoticed and sting the mouth or throat.
• Protect bare feet on lawns - Never walk barefoot across grass during peak summer months, as clover and flowering weeds frequently harbour foraging bees and ground-nesting wasps.
• Add supplementary protection for low-risk settings - Wearable options like Xpel Mosquito and Insect Repellent Bands offer an extra barrier on wrists or ankles during outdoor play. Keep in mind, though, that these are supplementary aids and won’t replace applied repellent in high-mosquito zones.

What Should You Do Immediately After an Insect Bite?

Start with rapid first-aid steps to calm inflammation and protect against secondary bacterial infections:

• Clean the area - Wash the bite thoroughly with plain soap and warm water to remove bacteria and insect saliva from the skin's surface.
• Cool any swelling - Apply an ice pack wrapped in a clean cloth for 10 to 15 minutes to constrict local blood vessels and reduce swelling. Keep the affected limb elevated if swelling is spreading across a joint.
• Stop the itching - Scratching damages the epidermal barrier and this is an invitation to infection. Use targeted pharmacy treatments instead:
  • Skincalm Hydrocortisone Cream Sting Bite & Itch Relief - A mild topical steroid that calms localized inflammation, redness, and persistent itching.
  • Anthisan Bite and Sting Cream - Contains mepyramine maleate, an antihistamine that directly blocks histamine receptors in the skin to ease burning and irritation.

Check with our pharmacy team before applying hydrocortisone to young children, during pregnancy, or on facial skin.

What is the safest way to treat a bee, wasp, or hornet sting?

Stings inject venom directly into the tissue, creating sudden, sharp pain:

• Remove bee stingers immediately - Honeybees leave their stinger and venom sac behind. Scrape it away sideways using a fingernail or the firm edge of a bank card. Never squeeze or pull with standard tweezers, as pinching ruptures the venom sac and pumps more toxins into the skin.
• Manage wasp and hornet stings - Wasps and hornets do not leave their stingers behind. Wash the skin with soap and water, apply an ice pack to manage throbbing pain, and use an oral antihistamine or paracetamol to control swelling and discomfort.

How should you handle a tick bite and guard against Lyme disease?

Ticks require careful handling because they can transmit Lyme disease in parts of the UK:

• Check vulnerable areas - After walking in woodlands or tall grass, check warm skin folds, hairlines, behind knees, and pet fur.
• Removing the tick - Use fine-tipped tweezers or a purpose-made tick removal tool. Grasp the tick as close to the skin as possible and pull straight upward with steady, even pressure. Do not twist, squeeze, or smother it in petroleum jelly. Disinfect the bite thoroughly afterwards.
• Monitor carefully - Contact your GP or NHS 111 if an expanding circular or oval rash (often resembling a bullseye) appears within 1 to 4 weeks, or if you develop flu-like aches, fatigue, or fever.

When Is an Insect Bite or Sting an Emergency?

Most bites and stings are minor, but serious allergic reactions can happen.

Call 999 immediately if someone develops signs of anaphylaxis after being bitten or stung. These can include sudden swelling of the lips, mouth, tongue or throat, difficulty breathing, wheezing, difficulty swallowing, feeling faint, severe dizziness or loss of consciousness.

If the person has been prescribed an adrenaline auto-injector, it should be used according to their instructions while waiting for emergency medical help.

You should also seek medical advice if a bite becomes increasingly red, hot, painful or swollen, particularly if pus or fluid develops. These can be signs of infection.

Frequently Asked Questions About Insect Bites and Stings

Insect bites and stings can leave you wondering what is normal, which treatments work best and when a bite needs medical attention. Here are answers to some of the questions we hear most often.

How long do insect bites and stings take to go away?

Most uncomplicated insect bites and stings improve within a few days. Some local reactions can last longer, particularly when there is significant swelling. If symptoms are getting worse rather than better, speak to a pharmacist, GP or NHS 111 for advice.

What is the best thing to put on an insect bite?

For a straightforward bite, wash the area with soap and water and use a cold compress to help with swelling. If itching is troublesome, a pharmacist may recommend an antihistamine or an appropriate cream, such as hydrocortisone.

Does hydrocortisone cream help insect bites?

Yes. Hydrocortisone is used to reduce inflammation and itching caused by reactions to insect bites and stings. However, it should be used according to the product instructions, and you should ask a pharmacist if you are unsure whether it is suitable for you or your child.

Should you scratch an insect bite?

It is best not to scratch. Scratching can break the skin and make it easier for bacteria to enter, increasing the risk of infection. Keeping the area cool and using an appropriate treatment for itching can make it easier to resist the urge.

Does DEET really prevent mosquito bites?

DEET is an established insect repellent active ingredient and is widely recommended for preventing mosquito bites. Products containing DEET can provide effective protection when used correctly. Always follow the instructions on the specific product you are using.

What should I do if an insect bite becomes infected?

Increasing redness, warmth, pain, swelling or pus can indicate an infection. Speak to a pharmacist or GP for advice. Some UK pharmacies can also assess and treat certain uncomplicated infections through NHS services where appropriate.

When should I call 999 after an insect sting?

Call 999 immediately if you experience symptoms suggesting anaphylaxis, including difficulty breathing, swelling of the mouth or throat, severe dizziness, fainting or sudden difficulty swallowing. If you have an adrenaline auto-injector, use it as directed while waiting for emergency help.

Enjoy the Outdoors Without Letting Insects Ruin Your Day

Insect bites and stings are an unfortunate part of spending time outdoors, but a few sensible precautions can significantly reduce the risk. Use an effective repellent, cover exposed skin, take extra care around food and drink, and check yourself for ticks after spending time in grassy or wooded areas.

If you do get bitten or stung, prompt and simple treatment can usually keep discomfort under control. Washing the area, applying a cold compress and avoiding scratching are good starting points, while suitable pharmacy treatments can help with persistent itching, pain and inflammation.

Whether you are planning a UK staycation, heading abroad or simply enjoying your garden, 121 Pharmacy is here to help you prepare for insect bites and stings with practical advice and suitable treatments.

Explore insect bite and sting relief and insect repellent products at 121 Pharmacy today, and enjoy your time outdoors with greater peace of mind.