WARM UP 12/13

• Write all the parts you

• see on here

EXTRA CREDIT!

On a SEPARATE sheet of paper, you and a partner decide what disease or disorder is being descried and write it down.

The top 3 groups with the most correct will get ec slips

DERMATOLOGY

The study of the skin and its parts

ATHLETE’S FOOT

An itchy, red, peeling condition of the skin between the toes.

Cause: fungus infection (usually from public bathrooms and showers)

BOILS

Infected hair follicles; large and pus-filled.

CAUSE: bacteria

SHINGLES

Viral infection of the nerve endings in the skin. Severe itching and painful

COLD SORES

Small fluid-filled blisters that itch and sting

CAUSE: herpes simplex virus

Usually occur around mouth and lips

Virus dormant in nerve – stimulated by stress, fever, or sunlight

CONTACT DERMATITIS

Itching, redness, swelling of skin, may blister.

CAUSE: chemicals or plants (poison ivy)

IMPETIGO

Pink, water-filled, raised lesions that develop a crust and rupture. Usually around the mouth and nose

CAUSE: staph infection (highly contagious)

Common in young children

PSORIASIS

Dry, silvery scales on the skin. Skin can flake off in large amounts. (Noncontiguous)

In normal  growth  pattern,  the skin cells  are  created  in the  basal  layer  and  then  move up  to  the  outer  layer  of  the  skin. The dead cells  are  shed  from the  skin  at  the  same  rate  as  new  cells  are  produced   maintaining  a  balance. The  normal  course of this phenomenon  is  about  28 days  from cell birth  to  death.

In  psoriasis,  the  affected  areas switch from  normal  growth pattern. More cells  are  created  and  pushed  to  the  surface  very  fast. The  skin  cannot shed  as  fast  as growth occurs. The  excessive  skin  cells  builds up  and  form  elevated scaly  lesions.  The  white  scales  that  usually  cover  the  lesion  is a component  of dead  skin cells. The  redness  is  caused  by  the  increased blood  supply to the  affected  area.

RINGWORM

Scale, reddish, ring-shaped patches on the skin

CAUSE: fungus

ECZEMA

Red, scaly, itching patches of skin. Common in young children. (noncontagious)

BED SORES

Sores causes by decrease in blood supply and constant pressure on the skin (decubitus ulcer)

ACNE

Inflammation of the sebaceous glands.

CAUSE: bacteria, oil, dead cells

blocking pores

WARTS

bumps on the surface of the skin that are rough and hard.

CAUSE: viral infection of the epidermis

BLACKHEADS AND WHITEHEADS

Keratin plugs the hair follicles and blocks sebum. Turn black when exposed to air.

FOLLICULITUS

Infection of the scalp, pus umps and redness around the hair.

CAUSE: bacteria (common with use of hair pomades)

RAZOR BUMPS

Bumps usually seen around the male faces. Due to curly hairs coming out, then growing back into the skin.

EPIDERMOLYSIS BULLOSA

Heredity disorder

Layers of the skin can easily be pulled apart. A simple touch can separate the layers and cause blisters or rip.

HERPES SIMPLEX

Cold sore – viral infection of the skin that may reoccur. This is because the virus hides in nerves.

• Group of small red bumps that blister, itch or burn. Dry up in a few days and form yellow crust. Lasts 10-14 days.

• Causes: skin contact (kissing, sharing drinks, towels, etc.) fever, stress

ROSACEA

Common face rash of adults. Redness of face, some swelling, pimples. May last for years.

CAUSE: unknown, may be sunlight

XEROSISDry skin – can see it because the dead squamous cells are flaking off in

excess amounts

CAUSE: • long hot baths, showers – remove body oils• Some soaps• Cold air

TREATMENT:• Blot skin after showers, then apply moisterizer• Alpha hydroxyacid lotions best• Best soaps: Dove, Oil of Olay, Cetaphil

PRURITUS

Itching of skin

MANY STORIES THAT STARTED IN THE MIDDLE AGES COME FROM THE FACT THAT DISEASES WERE NOT UNDERSTOOD…for example vampires and werewolves.

PORPHYRIA

When skin exposed to sunlight lesions and scars develop, gums degenerate. Due to lack of iron part of hemoglobin. These people avoided the light (middle ages – vampires). To help, can inject heme from healthy patients (before could do this, drink heme from blood)

Garlic – severely aggravates the porphyria symptoms

ALSO some have excess hair growth on the face and hands – wolflike look