HTHS 1101 Chapter 3 The Integumentary System – Dermatology

Integument/Skin Functions: Protection Keep invaders out Keep important stuff in Regulation Temperature control Release of substances through secretions Sensation First point of contact with environment Touch, pressure, pain, temperature

Integument/Skin Important Players: Skin Epidermis Dermis Hair Nerves Glands Sweat Sebaceous Nails

Skin/Integument Terms Fat adip/o lip/o steat/o Skin cutane/o derm/o dermat/o Hair pil/o trich/o

Skin/Integument Terms sweat hidr/o nail onych/o ungu/o scale squam/o oil seb/o sebace/o

Skin/Integument Pathology Skin pathology most often relates to changes in texture, hydration, color or the presence of a rash or bumps. Texture ichthyo- kerato- pachyo- xero- rhytido-

Skin/Integument Pathology Color leuk/o erythr/o xanth/o melan/o cyan/o albin/o

Skin/Integument Pathology Rashes, bumps Location of a rash Localized vs. generalized Spreading Centrifugal vs. centripetal Presence of bumps and their size Papules <1cm Nodules >1cm Plaques are large and flat

Skin/Integument Pathology Rashes and bumps (continued) Bumps that are filled with fluid: Vesicles are <1 cm and filled with clear fluid Bulla are >1 cm and filled with clear fluid Pustules are filled with pus Abscesses are large pustules Flat spots: Freckles are small flat spots called macules Large macules are called patches

Skin/Integument Pathology Other skin related conditions Collection of blood vessels cherry angioma – raised telangiectasia – flat Bruises petechiae – small ecchymosis – large Scar formations cicatrix keloid Epidermal tumors nevus dysplastic nevus verucca

Skin/Integument Pathology Other skin related conditions (continued) Infections comedo acne vulgaris impetigo fungal infections/mycoses Malignancies basal cell carcinoma malignant melanoma squamous cell carcinoma

Skin/Integument Pathology Nails onycholysis onychomalacia onychopathy onychophagia onychocryptosis paronychia

Skin/Integument Pathology Hair trichopathy alopecia hypertrichosis trichomegaly

Skin/Integument Diagnosis and Treatment Culture and sensitivity biopsy excisional incisional shave punch dermoscopy dermatoscope

Skin/Integument Diagnosis and Treatment Medications Anti-infection anti-immune anti-itch or allergy Other treatments Chemicals Vacuums Cold Lasers Electricity Surgery skin grafting

Skin/Integument Diagnosis and Treatment Procedures chemosurgery cryosurgery chemotherapy dermabrasion electrocauterization electodesiccation incision and drainage (I&D)

Skin/Integument Diagnosis and Treatment Procedures (continued) onychectomy onychotomy liposuction lipectomy rhytidoplasty

Skin/Integument Abbreviations

Burning Questions How complete do our presentations need to be? How much A&P do we include? How close to the textbook should we be? Is there a structure or format that makes more sense? Do we include video links? Do we include references to sections/activities in the book?