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Dermatology

Bites and Stings

Built from Dermatology, 5th Edition

The first 25 slides of Bites and Stings
The first 25 slides, exactly as they appear. The full deck has 141 content slides.

What’s inside

8 sections · 141 slides

  1. 01

    Overview

    • What this chapter covers

    1 slide

  2. 02

    Insects

    Bites and stings from the class Insecta, and the skin reactions they cause

    • What counts as an insect bite reaction
    • How the skin reacts to a bite
    • Typical insect bite reaction
    • Reading the spectrum of bite reactions
    • Spectrum of insect bite reactions
    • Chronic and unusual bite reactions
    • Bee and wasp stings
    • What a bite looks like under the microscope
    • Insect bite reaction with Langerhans cell hyperplasia
    • Telling a bite reaction from other rashes
    • Treating the itch and inflammation
    • When topical treatment is not enough
    • The many faces of an arthropod bite
    • Preventing bites: choosing a repellent
    • Commonly used insect repellents
    • Commonly used insect repellents (continued)
    • Commonly used insect repellents (continued)
    • DEET: dosing and limits
    • Alternatives to DEET
    • Being ready for a sting emergency
    • Venom immunotherapy
    • Fire ants: introduction
    • Fire ant sting mechanism and pattern
    • Recognizing fire ant sting reactions
    • Sterile pustules at fire ant sting sites
    • Managing fire ant allergy and infestations
    • Bedbugs (Cimex lectularius)
    • Bedbugs: a worldwide resurgence
    • Why bedbug bites itch
    • Recognizing bedbug bite reactions
    • Do bedbugs spread disease?
    • Evaluating and managing bedbug infestations
    • Getting rid of bedbugs
    • Triatomine (kissing) bugs
    • Kissing bug bites and Chagas disease
    • Blister beetles: cantharidin
    • Blister beetle reactions
    • Rove beetles and pederin dermatitis
    • Rove beetle dermatitis in detail
    • Paederus dermatitis and the rove beetle
    • Carpet beetle dermatitis
    • Pulex irritans, the human flea
    • Fleas: an unfussy pest
    • Anatomic features of common flea types
    • Flea bite reactions
    • Fleas as disease vectors
    • Treating and preventing flea infestation
    • Lepidopterism: caterpillar and moth reactions
    • Skin and systemic reactions to caterpillars
    • Train-track hemorrhage from puss caterpillar contact
    • Cutaneous and systemic reactions in lepidopterism
    • Cutaneous and systemic reactions in lepidopterism (continued)
    • Cutaneous and systemic reactions in lepidopterism (continued)
    • Ocular injury and ingestion in children

    54 slides

  3. 03

    Arachnids

    Ticks, mites, spiders, and scorpions - vectors, venoms, and clinical patterns

    • Tick bites: how ticks feed and spread disease
    • A hard tick's life cycle
    • Recognizing a tick bite reaction
    • Hard ticks versus soft ticks
    • Treating tick bite reactions and tick-borne disease
    • Reducing tick exposure in the environment
    • Tick control measures
    • Repelling ticks with permethrin
    • Removing an attached tick
    • Should antibiotics follow every tick bite?
    • 3.2%
    • The lone star tick (Amblyomma americanum)
    • Amblyomma tick bites: sites and diseases
    • From tick bite to red meat allergy
    • American dog tick and Rocky Mountain wood tick
    • Dermacentor ticks and Rocky Mountain spotted fever
    • Why RMSF treatment cannot wait
    • The brown dog tick (Rhipicephalus)
    • The blacklegged (deer) tick
    • The reaction to an attached Ixodes tick
    • Emerging Ixodes-borne infections
    • Where each major tick prefers to attach
    • Mites: small arachnids, huge diversity
    • Mite families
    • Mites of medical importance
    • Mites of medical importance (continued)
    • Mite bite reactions
    • Where mite bites come from
    • Mite bites after contact with hay bales
    • Mites often get misdiagnosed
    • Confirming a mite exposure
    • Preparing collected mites for microscopic exam
    • Treating mite bite reactions
    • Chiggers
    • Cheyletiella mites
    • Cheyletiella dermatitis
    • Spider bites: an overview
    • Spiders that cause significant reactions
    • Widow spiders (Latrodectus)
    • How black widow venom works
    • Widow spider bite: what to expect
    • Treating a widow spider bite
    • Brown recluse spider (Loxosceles reclusa)
    • Loxosceles spiders: identification and range
    • US distribution of dermonecrosis-causing spiders
    • How brown recluse venom damages skin
    • The dermonecrotic bite
    • Loxosceles bite: what the tissue shows
    • Treating a Loxosceles bite
    • Funnel-web spiders
    • Tarantulas
    • Scorpions
    • Selected clinically important scorpion species
    • Scorpion sting: clinical picture
    • Treating a scorpion sting

    55 slides

  4. 04

    Centipedes and Millipedes

    A biting predator and a non-biting chemical irritant, easily confused with a snake bite

    • Centipedes and millipedes compared
    • Reactions and treatment

    2 slides

  5. 05

    Snake Bites

    Envenomation from outdoor activity and occupational exposure

    • Snake bites: who is affected, and how they present
    • Treating a snake bite

    2 slides

  6. 06

    Dog and Cat Bites

    Common household injuries with a real infection risk

    • Dog and cat bites: patterns and rabies risk
    • Germs found in bite wounds
    • Pathogens in human and animal bite wounds
    • Treating a dog or cat bite

    4 slides

  7. 07

    Leeches

    Freshwater bites that cause bleeding, plus a modern medical use

    • Leech bites and leech therapy

    1 slide

  8. 08

    Marine Injuries

    Venomous and infectious hazards from the ocean and its creatures

    • Infection risk after a marine injury
    • How stinging marine animals injure the skin
    • Sea urchin injuries
    • Seabather's eruption
    • Jellyfish stings
    • The Portuguese man o' war
    • Sponges, corals, and shellfish
    • Stingray injuries
    • What marine stings look like under the microscope
    • First aid and treatment for marine stings
    • Key take-home points, part 1
    • Key take-home points, part 2
    • References
    • References (continued)
    • References (continued)
    • References (continued)
    • References (continued)
    • References (continued)
    • References (continued)
    • References (continued)
    • References (continued)
    • Dermatology, 5th Edition (2-Volume Set)

    22 slides