Kazan State Medical University

Surgery Presentation Bite wounds (insects)Name :

Group :

Insects Bites • Insect bites are puncture wounds or lacerations made by insects.• An insect maybite when it is agitated and defends itself, or when it wants to feed. • Insects typically inject formic acid. • This can lead to blisters, inflammation, redness, swelling, pain, itching, and irritation

Definition

• Stings and bites from insects are common. • They often result in redness and swelling in the injured area. • Sometimes a sting or bite can cause a life-threatening allergic reaction or transmit pathogens (viruses, bacteria or parasites, for example) to humans• Many bites will clear up within a few hours or days and can be safely treated at home• It can be difficult to identify what you were bitten

Common insect bites and stings include:• Wasp and hornet stings• Bee stings• Mosquito bites• Tick bites• Horsefly bites• Midge or gnat bites• Bedbug bite• Mite bites

• Flea bites• Spider bites• Ant stings and bites• Ladybird bites• Flower bug bites• Caterpillar hairs

Wasp and hornet stings:• A wasp or hornet sting causes a sudden,

sharp pain at first. • A swollen red mark may then form on

your skin, which can last a few hours and may be painful and itchy.• Sometimes a larger area around the

sting can be painful, red and swollen for up to a week. • This is a minor allergic reaction that isn't

usually anything to worry about.• A few people may experience a serious

allergic reaction (anaphylaxis), causing breathing difficulties, dizziness and a swollen face or mouth. 

Bee stings:• A bee sting feels similar to a wasp sting, but the sting will often be left in the wound. • The sting can cause pain, redness and swelling for a few hours. • As with wasp stings, some people may have a mild allergic reaction that lasts up to a week.• Serious allergic reactions can also occasionally occur, causing breathing difficulties, dizziness and a swollen face or mouth.

Mosquito bites:• Bites from mosquitoes often cause small red lumps on your skin. • These are usually very itchy. Some people may also develop fluid-filled blisters.• Mosquitoes don't cause major harm in some countries , but in some parts of the world they can spread serious illnesses such as malaria.• After a mosquito bite develop worrying symptoms, such as a fever, chills, headaches and vomiting

Tick bites:• Tick bites aren't usually

painful, so you may not realise you've been bitten straight away.

• Symptoms of a

tick bite can include:• a small red lump on the

skin• swelling• itchiness• blistering• bruising

• Ticks can sometimes carry a potentially serious infection called Lyme disease, so they should be removed as soon as possible if you find one attached to your skin.

Horsefly bites:• A bite from a horsefly can be very painful and the bitten area of skin will usually be red and raised.

• Horsefly bites can take a while to heal and can become infected

• Symptoms of a tick bite can include:

• a larger red, raised rash (called hives or urticaria)

• dizziness

• weakness

• wheezing

• part of your body becoming puffy and swollen

Midge or gnat bites:•Midge and gnat bites often

look similar to mosquito bites.• They usually cause small, red lumps that can be painful and very itchy, and can sometimes swell up alarmingly.•Some people may also develop fluid-filled blisters.

Bedbug bites:• Bedbug bites typically occur on the face, neck, hands or arms. • They're typically found in straight lines across the skin.• The bites aren't usually painful, and if you've not been bitten by bedbugs before, you may not have any symptoms.• If you have been bitten before, you may develop itchy red bumps that can last for several days.

Mite bites:•Mite bites cause very itchy red lumps to develop on the skin and can sometimes also cause blisters.•Mites usually bite uncovered skin, but you may be bitten on your tummy and thighs if your pet has mites and has been sitting on your lap.•Some mites burrow into the skin and cause a condition called scabies.

Flea bites:• Flea bites can cause small, itchy red lumps that are sometimes grouped in lines or clusters. • Blisters may also occasionally develop.• Fleas from cats and dogs often bite below the knee, commonly around the ankles. • You may also get flea bites on your forearms if you've been stroking or holding your pet.

Spider bites:• some native spiders – such as the false widow spider (see image above) – are capable of giving a nasty bite.• Spider bites leave small puncture marks on the skin, which can be painful and cause redness and swelling.• Some spiders are venomous and their bites can cause nausea, vomiting, sweating and dizziness. • Bites can also become infected or cause a severe allergic reaction in rare cases.

Ant stings and bites:• The most common ant , the

black garden variety, doesn't sting or bite, but red ants (see image above), wood ants and flying ants sometimes do.•Ant bites and stings are generally harmless, although you'll probably feel a nip and a pale pink mark may develop on your skin.•Sometimes the bitten area may be painful, itchy and swollen.

Ladybird bites:•All ladybirds can bite, but a

type called the harlequin ladybird found throughout much more aggressive and tends to bite more often.• The harlequin ladybird can be red or orange with multiple spots. • Look out for a white spot on its head – other ladybirds don't have these patches.• Ladybird bites can be painful, but aren't usually

Flower bug bites:•Flower bugs are common insects that feed on aphids and mites. • You can identify the common flower bug by its tiny oval body, reflective wings and orange-brown legs.•Flower bugs bites can be painful and very itchy, and are often slow to heal.

Caterpillar hairs:• The caterpillars of the oak

processionary moth are a real pest. • In late spring and summer, the caterpillars have thousands of tiny hairs that can cause itchy rashes, eye problems and sore throats – and very occasionally breathing difficulties. • The caterpillars walk up and down trees in nose-to-tail processions.

Thank you Very Much

By : Mahi