papulosquamous lim Flashcards
What is the eponym for PLEVA?
Mucha-Habermann disease
What is the SYSTEMIC treatment for crusted scabies?
ivermectin
What has a classic moccasin distribution?
tinea pedis
What regions of the body is Malassezia furfur most common?
Areas of sebaceous glands, it requires oil to grow (sebum)
Tx for mycosis fungoides
PUVA, topical nitrogen mustard, TARGRETIN, electron beam therapy
What fungus is a causal factor in seborrheic dermatitis
Malassezia ovalis
What is Majaki’s granuloma?
fungus driven deep into hair follicle
T/F: you can cure seborrheic dermatitis
false it is a chronic condition so really can only be managed
To what virus is Pityriasis rosea associated?
HHV-6 so this shouldn?t be too hard to remember since it is roseola
How do you confirm syphilitic infection?
FTA-ABS test (fluorescent treponemal antibody absorption test)
What is the itch that rashes?
atopic dermatitis
Tx for pityriasis rubrum pilaris
accutane
What is oriented along skin lines in a classic christmas tree pattern?
Pityriasis rosea
Lacy white lesions in mouth with weird looking papules on skin makes you think ___________
WTF??? But you’re supposed to think of lichen planus
What is the Tx of PLEVA?
chronic antibiotics (erythromycin and doxy) works for some reason
What are 4 drugs that can precipitate or exacerbate psoriasis?
lithium, beta blockers, antimalarials, systemic steroids
T/F: tinea infections infect live tissue
false the live in stratum corneum, which is dead
What do you think of with “islands of normalcy”
pityriasis rubrum pilaris
The “Herald Patch” is associated with what?
Pityriasis rosea
What virus is lichen planus often associated with?
Hepatitis C
Acral pustular psoriasis lends itself well to Tx with ____________
retinoids
Wickham’s Striae and the Koebner phenomenon often occur in ____________
Lichen planus (Koebner also in psoriasis et al but wickham striae are lichen planus)
What should you keep in mind when eczematous lesions fail to clear?
Possibility of Cutaneous T cell lymphoma (Mycosis fungoides)
What is “Liner’s Disease”?
serious seborrheic dermatitis in babies
3 genera of dermatophytes
Microsporum, trichophyton, and epidermophyton
What are 3 diseases that seborrheic dermatitis is associated with?
AIDS, Parkinson’s, and Down’s
What diseases often have false positives on screening tests (VDRL andRPR) for syphilis
collagen vascular diseases (first aid says SLE has false pos because interacts with cardiolipin in the test)
T/F: topical meds are good enough to treat guttate psoriasis
FALSE
What should you think of when a papulosqumaous rash does not respond to TX?
Cutaneous T cell lymphoma
what STD might you need to differentiate pitryiasis rosea from?
secondary syphilis
Who is most likely to have issues with post-inflammatory hyperpigmentation?
darker skinned individuals
What has a characteristic collarette scale?
Pityriasis rosea
T/F: ANA is positive in most cases of subacute cutaneous lupus
false ANA is often negative
If M. furfur is normal flora then why doesn?t everyone have pityriasis versicolor?
Because “certain endogenous and exogenous” factors cause it to go from normal yeast form to mycelial form
What are papulosquamous diseases?
Diseases characterized by scaly papules and plaques
If there is residual hypopigmentation after Tx of M. furfur, then how do you know your Tx worked?
You can use Wood’s lamp, the lack of fluorescence will tell you there is no fungus present
What co-morbidities are associated with psoriasis
arthritis, heart disease, diabetes, cancer, and HTN
What does PLEVA stand for?
Pityriasis Lichenoides et Varioliformis Acuta
What is dandruff?
seborrheic dermatitis
Tx of syphilis
penicillin G
What is the paradigm shift in tx of atopic dermatitis
less steroids and more normalizing barrier function
Why is there hypopigmentation in M. furfur infections? Given that can you confidently say that it is localized to the stratum corneum?
There is melanocyte damage; no because melanocytes are located in stratum basale
Another name for Norwegian scabies
Crusted scabies
What other infectious lesion might secondary syphilis closely resemble?
Pityriasis rosea
Age distribution for Pityriasis rubra pilaris
bimodal young and old
“I scratched myself and it started to look weird”
probs the koebner phenomenon or dermatographism
What kind of drugs especially seem to induce subacute cutaneous lupus?
HCTZ and CCBs
What does nummular eczema look like?
coin-like
What is the term for a swollen achilles tendon?
enthesitis
What is the greasy and waxy rash?
seborrheic dermatitis
T/F: tinea involves the scrotum and penis
FALSE
What labs are usually negative with psoriasis?
Rheumatoid arthritis labs essentially: RF neg and anti-citrullinated peptide negative
What diseases is seborrheic dermatitis assoc with?
Down’s, MR, and Parkinson’s as well as IC pts
What is cradle cap in infants?
seborrheic dermatitis
What kind of drugs are used for psoriasis?
Methotrexate, cyclosporine, TNF-blocking biologics
What kind of changes to the nail may occur with psoriasis?
onycholysis, subungual debris, pitting, oil spot lesion, and nail deformity
T/F: it is safe to touch secondary syphilis rashes
false they are infectious
These lesions have “clean cut ham” color
secondary syphilis
