Ch 22

Question 1

Acne

Answer 1

Caused by propionibacterium acnes. Sebum accumulated when a gland is blocked, giving food to acne.

Question 2

Staphylococcal scalded skin syndrome

Answer 2

Potentially fatal, toxin mediated disease. Occurs in infants. Burns like lesions on skin

Caused by staph aureus strains that produce toxins exfoliation.

Question 3

Rock mountain spotted fever

Answer 3

Caused by rickettsia and transmitted by ticks.

Begins with fever, headache, pains in muscles. Rash then appears. Pink spot on palms, soles of feet, ankles. Wrists. Bleeding occurs in nose and mouth. Drop in blood pressure, shock, death.

Doxycycline is used

Question 4

Lyme disease

Answer 4

Early localized infection- skin rash

Early disseminated infection. Begins 2-8 weeks after. Dizzy spells fainting.

Let persistent infection- 6 months after. Joint and pain swelling . Chronic nervous system problems may occur.

Caused by borrielia burgdorferi

Question 5

Warts

Answer 5

Small tumors called palillomas.

Incubation period 2- 18 months.

Question 6

Wound abscess

Answer 6

Localized collection of pus surrounded by inflamed body tissue. The pus is composed of living and lead leukocytes.

Question 7

Flesh eating disease

Answer 7

Caused by streptococcus pyogenes. Sever pain, swelling at wound site. Confusion shock. Rare.

Question 8

Tetanus

Answer 8

Fatal. Lock jaw. Muscle cramps. Symptoms appear a week after infection. Difficulty swallowing, seizures.

Caused by clostridium tetani

Puncture wounds, body piercing

Question 9

Gas gangrene

Answer 9

Infected wound. Presence of dirt in wound. Long delays before wound is treated. Swelling and bloody brownish fluid leaks from wound.

Caused by clostridium perfringens

Can happen after abortions. Diabetes predisposing factor