ch.21/24 differential diagnosis

lower resp → acid fast rods → yes

tuberculosis

lower resp → acid fast rods → no → location (Mississippi R valley) → association with birds and bats → yes

histoplasma

lower resp → acid fast rods → no → location (Mississippi R valley) → association with birds and bats → no

blastomyces

lower resp → acid fast rods → no → location (SW USA)

coccidiodes

upper resp →sore throat → no

otitis media

upper resp →sore throat → yes → viral

common cold

upper resp →sore throat → yes → bacterial → pseudomembranous → yes

diptheria

upper resp →sore throat → yes → bacterial → pseudomembranous → no → gram (-)

epiglottis

upper resp →sore throat → yes → bacterial → pseudomembranous → no → gram (+) → rash → yes

scarlet fever

upper resp →sore throat → yes → bacterial → pseudomembranous → no → gram (+) → rash → no

strep throat

reservoir → animal → large mammal

Q fever

reservoir → animal → birds

psittacosis

reservoir → human→ bacterial → paroxysmal coughing

pertussis

reservoir → human→ bacterial → fluid in lungs → severe → gram (+)

primary pneumonia

reservoir → human→ bacterial → fluid in lungs → severe → gram (-)

Hib pneuomonia

reservoir → human→ bacterial → fluid in lungs → mild

walking pneumonia

reservoir → human→ bacterial → fluid in lungs → hospital association → current jelly → yes

klebsiella

reservoir → human→ bacterial → fluid in lungs → hospital association → current jelly → no

pseudomomas

reservoir → human→ fungal

pneumocytis

reservoir → non-living → water

legionellosis

reservoir → non-living → moist soil

melliodosis

bacterial sore throat

red throat with white patchy pus mucous

viral sore throat

red sore throat

patchy redness/pimple-like → mode of transmission → soil

sporotrichosis

patchy redness/pimple-like → mode of transmission → water → swimming

pseudomonas dermatitis

patchy redness/pimple-like → mode of transmission → water → contaminated

buruli ulcers

patchy redness/pimple-like → mode of transmission → direct contact → cauliflower-like lesions

warts

patchy redness/pimple-like → mode of transmission → direct contact → fairy circles

ringworm

patchy redness/pimple-like → mode of transmission → direct contact → serpentine lines

scabies

patchy redness/pimple-like → mode of transmission → direct contact → extensive tissue destruction

necrotizing facilitas

patchy redness/pimple-like → mode of transmission → direct contact → pimple-like lesions

acne

patchy redness/pimple-like → mode of transmission → endogenous infection → sunburn-like rash

toxic shock syndrome

patchy redness/pimple-like → mode of transmission → endogenous infection → red patches

erysipelas

macular rash → direct contact

candida albicans

macular rash → aerosol → mouth

hand-foot-mouth disease

macular rash → aerosol → face only

fifth disease

macular rash → aerosol → torso 1st

roseola

macular rash → aerosol → “top → down” → koplick spots → yes

measles

macular rash → aerosol → “top → down” → koplick spots → no

rubella

vesicular/pustular → pustular → reservoir → human

smallpox

vesicular/pustular → pustular → reservoir → monkey

monkeypox

vesicular/pustular → vesicular → bacterial

impetigo

vesicular/pustular → vesicular → bacterial → viral → acute

chickenpox

vesicular/pustular → vesicular → bacterial → viral → latent → unilateral

shingles

vesicular/pustular → vesicular → bacterial → viral → latent → around the mouth

herpes simplex