Dermatology Step Up

Cellulitis

-Most bacterial cause is

-RF

-Tx

-Most bacterial cause is usually: GAS 

RF:

-IV drug use

-DM

Tx: 

-oral cephalosporins or penicillinase-resistant Beta lactase for 10-14 days 

-IV abx for severe cases of sepsis 

-Pts with purulence present and or risk for MRSA should receive cotrimoxazole or linezolid or IV vancomycin if severe 

Skin and wound cultures are

rarely useful in cellulitis because they frequently contain other normal skin flora or findings are false negative

Skin Abscess

-Layer of skin

-bacteria

-HS: layer of skin, tx

SUBQ collection of pus 

Staph (usually MRSA) 

HS: 

-chronic follicular occlusion and apocrine gland inflammation= recurrent abscesses

-Tx: may require both abx and sx excision

bacteria in abscesses of the lower back and perineal regions vs others

anaerobic bacteria more common in lower back and perineal regions to cause abscess

Facial abscess complication

cavernous thrombosis

Nec fasc

-def

-sxs

-labs

-radiology

-tx

-complications

Gangrene

-def

-sxs

-labs

-radiology

-tx

Dry gangrene vs wet

Impetigo

-def

-sxs

-tx

No proven association exists between acne vulgaris and

certain types of food

Acne usually decreases in severity as ___

____ use and _____ disorders are common causes of outbreaks in adulthood

Acne Vulgaris

-Tx

1. Topical retinoids first 

2. Topical or oral abx second 

3. Topical benzoyl peroxide also second 

3. OCP if unresponsive to above 

4. Oral isotretionoin for severe cases 

Next Step: Women should have at least _____ when starting oral isotretinoin is prescribed

2 negative urine pregnancy

HSV

-def

-transmitted via

-HSV-1 vs 2

-after primary infection,

-SXS

-Labs

-Tx

-Complications

Varicella

Check ____ in all pregnant women

_____ should be given to all nonimmune pregnant women who contract the disease

Verruca Vulgaris (warts)

-def

-sxs

-tx

-complications

Immunocompromised pts are at an increased risk for developing ____ as complications from varicella infection

encephalopathy

retinitis

Molluscum contangiosum

-def

-sxs

-labs

-tx

Scabies

-def

-RF

-SXS

-Labs

-Tx

Fungal Infections

-def

-frequently associated with

Common causes of allergic dermatitis include

plants

• poison ivy, poison oak, etc.

• nickle

• soaps

• latex

Erythema Multiforme

-def

-sxs

-labs

-tx

Agents assoicated with erythema multiforme

• penicillins

• sulfonamides

• NSAIDS

• OCPS

• anticonvulsants

SJS
-def

-what can be evident, high risk for

-SXS
-Tx

Toxic Epidermal Necrolysis (TEN)

-def

-labs

-tx

common infectious causes of erythema multiforme

HSV and Mycoplasma PNA

Seborrheic Dermatitis

-def

-most common in

-SXS
-Tx

-Complications

Atopic Dermatitis- eczema

-def

-forms

-RF

-sxs

-Tx

-Complications

Psoriasis

-labs

-tx

rash distribution for pityriasis rosea

christmas tree pattern

Pityriasis Rosea

-def

-SXS

-tx

Erythema Nodosum

-def

-caused by

-sxs

-labs

-tx

Pemphigus Vulgaris

-def

-epidemiology

-SXS
-labs

-tx

-complications

Bullous Pemphigoid

-def

-age

-SXS

-labs

-tx

Prophyria Cutanea Tarda

-def

-RF

-SXS

-Labs

-Tx

Actinic Keratosis

-def

-RF

-SXS
-Labs

-Tx

-Complications

even when AK is the suggested diagnosis

biopsy the lesion to r/o SCC

SCC

-def

-rf

-sxs

-labs

-tx

Basal Cell carcinoma

-def

-rf

-sxs

-labs

-tx

-complications

most common type of skin cancer

basal cell carcinoma

Melanoma

-def

-rf

Shave biopsy should never be

used to study a suspicious melanotic lesion because it does not provide sufficient tissue for clear diagnosis and cannot be used to measure lesion depth

Melanoma Types

-SXS

-Labs

-Tx