5th Disease

• Viral Disease
• Face appears as if cheeks have been slapped
• Firey Red Rash on Cheeks

Inflammatory Disease

Face, Chest, Back & Neck

Papules

Pustules

Comedos

Acne

Most common form of skin cancer

slightly elevated nodule w/ depression or ulceration in center that becomes more obvious as tumor grows

coagulation of tissue

heat or caustic substances that burn & scar skin

Ear Wax

Protects & lubricates the ear

Modified Sweat Gland

Produce Cerumen (ear wax)

Lubricate ear canal

• viral Disease
• Form of varicella virus
• sudden onset w/slight fever
•  eruptions of macules, papules & vesicles
• crusting over lesions with granular scab

• Inner thicker layer of skin
• true skin
• dermis
• Protects against mechanical & compression injury
• Serves as a resevoir for H₂O and electrolytes
• Composed of living tissue:
• capillaries
• lymphatic channels
• nerve endings
• vascular connections
• hair follicles, sweat glands, oil glands are embedded in dermis
• contains both connective tissue and elastic fibers for strength and elasticity
• if over stretched produces striae
• thickness varies depending on area i.e. eyelids & soles of feet

• The fold of skin that covers the root of the fingernail or toenail
• Extension of the stratum corneum

• Inflammation of the skin
• seen in several forms

• inner thicker layer of the skin
• corium
• true skin

• acute or chronic inflammatory skin condition
• redness
• itching
• papules
• pustules
• scales
• crusts
• scabs
• generally Ø contageous

• outer layer of the skin
• contains Ø blood Ø nerves
• many layers
• outer layer stratum corneum
• squamous epithelial cells -flat, scalelike & arranged in layers
• ≈5 different layers of stratified epithelium cells carrying on specific functions
• Stratum Basale - new cells are continually being reproduced pushing towards stratum corneum        -Contains melanocytes
• Protection from Injury
• Protection from UV
• Cells receive Nutrition from Dermis
• Stratum Corneum outermost layer of epidermis; dead cells are constantly being shed & replaced
• When cells reach the corneum they are dead, filled with keratin and create a waterproof barrier for the skin

• AKA Electrodesscication
• Technique using an electrial spark to burn & destroy tissue
• Primarily fro surface lesion removal

• Type 1: Wet : follow cessation of blood flow to tissue after a crushing injury, embolism, tourniquet or tight bandage
• Type 2: Dry : seen in a extremity that is dry, cold and shriveled, has a blackening appearance

• shingles
• viral actue infection characterized by painful vesicular eruptions on the skin following along the nerve pathways of spinal or cranial nerves

• contagious superficial skin infection caused by staph or strep infection 
• usually forming on face
• common in children
• serous vesicles & pustules filled with staph or strep

• Rare malignant lesion
• purple brown nodules
• associated w/ AIDS, diabetes & malignant lymphoma

• hard fibrous protein found in: epidermis, hair, nails, enamel of teeth & horns of animals
• waterproofing of the body

Keratosis

2 forms 

Keratosis- skin condition in which there is a thickening & over growth of cornified epithelium

• seborrheic keratosis: appears as brown or waxy yellow wartlike lesions, loosely attached to skin -senile warts
• actinic keratosis: a premalignant gray or red-to-brown, hardened lesion caused by excessive exposure to sunlight - solar keratosis

a common pigmented skin lesion, usually developing during adulthood

-mole

Pediculosis

4 kinds

A highly contagious parasitic infestation caused by blood-sucking lice

• Head- Pediculosis capitis
• Body- Pediculosis corporis
• Eyelashes/Eyelids- Pediculosis palpebrarum
• Pubic Hard - Pediculosis pubis

• Rare incurable disease
• blisters in mouth & on skin
• spreads to large areas of body: chest, face, umbilicus, back & groin

• common
• noninfectious
• chronic disorder of the skin
• silvery-white scales
• itching

• tinea
• chronic fungal infection of the skin
• scaling
• itching
• sometimes painful lesions

• Viral disease
• sudden onset
• high fever 3-4 days
• febrile seizures may occur

• mild febrile infectious disease
• rash of macules & papules -fade in 3 days
• german measles

• acute highly contagious viral
• begins in upper respitory track

• highly contageous
• parasitic infestation
• rash
• itching
• lightly raised thread-like skin lines

oily secretions of sebaceous gland:

lubricate hair

keep skin soft

waterproof skin

protect from infection

• a malignancy of the squamous (or scale like) cells of the epithelial tissue
• much faster growing cancer than basal cell
• aggressive & invasive

• fatty layer of skin
• loose connective tissue
• adipose tissue

• Chronic Inflammatory connective tissue disease multisystem
• lesions of the nervous system skin
• renal problems
• butterfly rash nose & face

Tinea

4 Types

• Ringworm
• chronic fungal infection
• scaling
• itching
• sometimes painful lesions
• Ringworm of Scalp-Tinea Capitis
• Ringworm of the body-Tinea Corporis
• Ringworm of the groin- Tinea Cruris*jock itch*
• Ringworm of the Foot- Tinea Pedis*athlete's foot* 

• Wart
• benign
• circumscribed
• skin lesion
• hypertrophy of the epidermis
• caused by HPV

• A Skin eruption or rash accompanied by inflammation, having specific diagnostic features of an infectious Viral disease
• Viral
• Roseola
• Rubella
• Rubeola
• 5^thDisease

1. Protection
2. regulate body temp
3. provides for elimination of body wastes via sweat
4. sensory receptor
5. 1st step in synthesis of Vitamin D

Epidermis

Dermis

Subcutaneous Layer

Hair

Nails

Glands

1. superficial
2. partial thickness
3. full thickness

• superficial
• sunburn
• Ø blisters
• redness
• painful
• slight swelling
• usually Ø scarring
• heal spontaneously w/ peeling in 3-4 days

• partial thickness
• blisters
• heals in 10-14 days
• painful
• epidermis & dermis involved
• pink to red color
• swelling
• flesh contact w/ hot object like hot H₂O

  ---

• Full Thickness
• damage depends on temp & duration of contact
• massive amount of necrosis
• damages epidermis, dermis, subcutaneous & muscle
• black, brown, tan, white or deep cherry (will not blanch)
• long time to heal
• produces pain according to amount of nerve tissue involved