80 likes | 204 Views
Chapter 4. Pages 105 - 109. Homeostatic imbalances of the skin. Loss of homeostasis in the cells and organs of the body often shows itself on the skin in a variety of ways The skin can develop more than 1000 different ailments
E N D
Chapter 4 Pages 105 - 109
Homeostatic imbalances of the skin • Loss of homeostasis in the cells and organs of the body often shows itself on the skin in a variety of ways • The skin can develop more than 1000 different ailments • Most common are the result of allergies or bacterial, viral, or fungal infections • Can also be burns or skin cancers, but these are much more damaging
Imbalances of the skin, cont’d. • Athlete’s Foot: the result of a fungal infection called tinea, athlete’s foot is specifically called tineapedis • Causes an itchy, red, peeling condition on the skin between the toes (most commonly), or on other surfaces of the foot
Imbalances of the skin, cont’d. • Boils and Carbuncles: Inflammation of the hair follicles and sebaceous glands • Very common on the neck • Carbuncle boils are specifically caused by a bacterial infection (usually from the Staphylococcus family)
Imbalances of the skin, cont’d. • Cold Sores/Fever Blisters: small fluid filled blisters that itch and sting • Caused by a herpes simplex infection • Virus settles in a cutaneous nerve, where it remains dormant until activated by emotional upset, fever, or UV radiation
Imbalances of the skin, cont’d. • Contact Dermatitis: itching, redness, and swelling of the skin which progresses to blistering • Caused by exposure to chemicals (like those present in poison ivy) that cause allergic reactions in those sensitive to the chemical
Imbalances of the skin, cont’d. • Impetigo: Pink, water-filled raised lesions (usually around the mouth and nose) that develop a yellow crust and eventually rupture • Caused by a highly contagious Staphylococcus infection • Common in school aged children
Imbalances of the skin, cont’d. • Psoriasis: a chronic condition which causes reddened epidermal lesions covered with dry, silvery scales • Can be disfiguring when it becomes severe • Unknown cause, but may be hereditary • Often triggered in those who suffer by trauma, infection, hormonal changes, or stress