Chap 8- Skin Disorders Flashcards
What type of organism causes tinea pedia?
Fungus
What is the innermost and outermost layer of the epidermis?
Stratum basale
Stratum corneum
What is the most common symptom associated with skin disorders?
Pruritis
What is the skin disorder common during pregnancy which causes hyper pigmentation of the skin?
Melasma
What is the substance produced by the sebaceous glands that keeps hair and skin soft?
Sebum
Name the black pigment that protects skin from Suns rays?
Melanin
What malignant skin cancer involves the epidermal cells and presents as a multi colored lesion with irregular border?
Malignant melanoma
What is another term for verrucae?
Wart
What bacterial skin infection presents w/honey colored crusty masses?
Impetigo
What layers of skin are affected by a cellulitis infection?
Dermis and subcutaneous
What skin infection involved small brown parasites resulting in very pruritic lesions?
Pediculosis/lice
What lesion is described as flat and scale like?
Plaque
Name the benign tumor found w/aging
Keratosis
What are some characteristics of the karposi syndrome?
Presents as purplish macules associated with HIV infection
What is the enzyme called that is responsible for tissue destruction in necrotizing fasciitis?
Protease secretion
What are symptoms of psoriasis?
Initially small red papule which progresses to a silvery plaque, itching and burning.
What is the causative organism of scabies?
Mite
Albinism is caused by a lack of which pigment?
Melanin
What is vitiligo?
Areas of hypo pigmentation- auto immune disease
What causes vitiligo?
Immune cells destroy melanocytes that produce pigment
Cause of cellulitis?
Staphylococcus or streptococcus
What is acute necrotizing fasciitis
Rapid tissue invasion, enzyme destroys tissue
Tinea
Fungal infection that may cause several superficial infections depending on the area of the body infected
Scabies
Invasion by mite, mite burrows into skin and lays eggs. Tiny brown lines, small vesicles and erythema
Integument
Skin
Pruritus
Associated with allergic responses, chemical irritation due to insect bites or infestation by parasites
Appendages
Accessory structure, hair follicles, sweat abs sebaceous glands and nails
Papillae
Irregular projections if dermis into epidermal region
