L3.7.1: Infections and Allergies

• Homeostatic balance

  • infections and allergies
  • burns
• Infections and allergies

  • Athlete's foot
  • Boils (Furuncles) and Carbuncles
  • Cold Sores (Fever blisters)
  • Contact Dermatitis
  • Impetigo
  • Psoriasis
• • Itchy, red, peeling skin between the toes
  • Caused by fungal infection Tinea pedis


  Athlete's foot
• • Carbuncles - clusters of boils caused by bacteria
  • Caused by inflammation of hair follicles


  Boils (Furuncles) and Carbuncles
• • Small fluid-filled blisters that itch and sting
  • Caused by Human Herpesvirus 1


  Cold Sores (Fever Blisters)
• • Itching, redness, and swelling of the skin
  • Caused by exposure to chemicals that provoke allergic responses


  Contact Dermatitis
• • Pink, fluid-filled raised lesions around mouth or nose
  • Caused by bacterial infection


  Impetigo
• • Red, epidermal lesions covered with dry, silvery scales that itch, burn, crack, or sometimes bleed
  • Triggered by trauma, infection, hormonal changes, or stress


  Psoriasis