HTHS 1101Chapter 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/IntegumentAbbreviations

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?