Ch 16 Infections Flashcards
Trichomycosis Folliculari
Diptheroids coat axillary hairs
Pitted Keratolysis
Diptheroids, sweaty shoes
Erythrasma
Diptheroids lead to porphoryn formation and color
Impetigo
Staph aureus is bullous desmoglein 1
strep can be nonbullous and lead to glomerulonephritis
if recurrent think of head lice
Ecthyma
Ulcer beneath wound/impetigo-full thickness, scar
Furuncle
inflamed hair follicle, commonly staph aureus
- If recurrent expect aureus and maybe MRSA
- Tx is I&D and Abx
Carbuncle
- Many coalescing furuncles
- Suspect MRSA
SSS
Desmoglein 1
Toxic Shock
Staph Aureus
-Desquemation of hands and feet
Erysepilis
Rapidly expanding and often accompanied by fever
- Tx is IV peniciln
- Can be recurrent and commonly in same area, can lead to lymphangitis and obstruction
Nec Facitiis
- Anaerobes and strep
- Aggressive debridement and IV abx
- Often presents as anesthetics area and deep infection
Erysepiloid
-In fish mongers and buthers
Cat scratch
-Granulomatous skin reaction at site and axillary LAD
Meningococcal
-Petichiae and Purpura
Syphilis
1-painless chancre
2-palms and hands have macular eythema, LAD, Condyloma, Patchy hairliss, mouth ulcers
3-Graunlomas
Yaws
Cutaneous Syphilis
Lyme
- Erythema Migrans
- Doxycycline is best, can also use amox
Cutaneous Anthrax
Painless ulcer leading to eschar
Gonococcal
-Arthritis and papulopustular
TB
-Can cause lupus vulgaris which is scaly brown patch commonly around head
Leprosy
- Transmitted nasally
- Tuberculoid is contained and often elads to small local hypopigmentation and anesthesia/thickening of nerves, not infectous
- Lempromatous-Disseminated, leione faces, anesthesia etc
- Type 1 - Borderline reversal reaction local erythema
- Type 2 - Lepromatous reversal reaction leading to systemic illness
Mycobacteria Marinarum
- Sprothrichoid spreach
- Through water, commonly cleaning fish tank
Leishmaniasia
- Discharge and skin reaction
- Donovani - Kalazar HSM, fever, skin darkening
- New world: Mucous membrane involvment
Warts
- 1,2,4 are common. 3 is plane. 6, 11, 16, 18 are high risk for SCC
- Mosaic has many smaller ones and are often slower to heal
- Plantar can be painful and may need exision
- Be slow with warts and don’t over excise
Wart Tx
-Topical salicylic etc, then to cryosurgery antigen ingectiosns to exisions last
Epidermodysplasia veruciformis
-Disseminated HPV
Varicella
- Respiratory spread
- Centrifugal vesicular rash with erythematous base
- Can treat with acyclovir/valciclovir
- COmplications are pneumonitis, secondary infection
Herpes Zoster
- Reactivation of varicells
- Treat early in course (5days)
- Dermatomal, multi think of immunodeficency
Herpes Simplex
EM May follow
- Initial and then dormant
- Vesicular lesions
Molluscum
- Pearly white umbilicated papules
- Most common on kids and don’t need to treat, can treat in adults with destruction
Orf
-Parapox virus from lambs
AIDS
- Kaposi Sarcoma, violaceous vascular grwoths
- Treat less than 200
- Folliculitis and seb derm from pytorosprum
- Dry skin and florid infections
Kawasaki
- Desquamation of hands and feet, conjunctivitis, strawberry tongue
- Commonly follows parvovirus infection
Gioncotti Crosti
- Symmetrical erythematous papules most common on the face
- Seen with Hep B
Herpangina/Hand Foot and Mouth
-COxaskie viurs,
_kids have vesicular or eroded/ulcerated lesions
Measles
-URI and falling rash
Rubella
-fever and then falling rash
FIfths
Parvo
Dermatophytes
- Trichophyton - Common in hair
- Microsporum and epidermosproin more common in skin
- Infect only the stratum corneum, more sever if zoonotic
- inflammation is from metabolic products
- Treated with terbenafine and griseofulvin
- Always get mycological proof before treatment
Tinea Pedis/Onychomycosis/Hands
- Commonly rubrum
- Can treat with locals
Capitis
- Trichphyton, tonsurans in AA
- Treat with systemics
- May cause hair loss or flaking
Candida
- Infections usually signal some sort of underlying immunodeficency
- Oral and angular stomatitis
- Intertrigo
- Genital
- Paronychia
- Chronic Mucocutaneous
- Tx is with itraconzaole (not terb/gris), can also use nystatin if topical
Pitaryasis Versicolor
- Caused by microsporum and has spaghetti and meatball appearance
- Fungus
- Tx with itraconazole because gris/terb don’t work
- areas of hypopigmentation
Fungal
- Histo: Granuloma
- Cocci: EN
- Blasto: Veruccous hyperkeratotic
- Sporptrichs: Lymphatic spread
- Actinomyces: SUlphur graunles
- Mycetoma: Foot rot
Kerion
-Inflamed and bogy tinea infection
Tinea Incognito
-spreading edge, steroids can hide symptoms
