Dermatology Flashcards
Drug class for Bacitracin
topical antibiotic
MoA for Bacitracin
inhibits cell wall formation by interfering w/ incorporation of peptidoglycan subunits in bacterial cell wall
Indications for Bacitracin
superficial G+ skin or mucosal infections
SE/ADRs for Bacitracin
burning sensation
Contra-indications for Bacitracin
hypersensitivity
Dx-Dx interactions for Bacitracin
none
Why is Bacitracin only used topically?
highly nephrotoxic systemically
Drug class for Mupirocin
topical antibiotic
MoA for Mupirocin
reversibly binds to tRNA synthase & inhibits bacterial protein synthesis
Indications for Mupirocin
superficial G+ (including MRSA) & selected G- skin, mucosal infections; impetigo
SE/ADRs for Mupirocin
burning, stinging
Contra-indications for Mupirocin
hypersensitivity
Dx-Dx interactions for Mupirocin
none
Drug class for Polymixin B sulfate
topical antibiotic
MoA for Polymixin B sulfate
interacts w/ phospholipids & disrupt bacterial cell membrane; bind to & inactive endotoxin
Indications for Polymixin B sulfate
- superficial G- (pseudomonas, E. coli, enterobacter, klebsiella)
- no G+, proteus, & neisseria coverage sec to resistance
SE/ADRs for Polymixin B sulfate
systemic toxicity includes muscle weakness, apnea, paresthesias, vertigo, slurred speech (but minimally absorbed w/ topical use)
Contra-indications for Polymixin B sulfate
ESRD
Dx-Dx interactions for Polymixin B sulfate
aminoglycosides
Monitoring for Polymixin B sulfate
CrCl for long term or high dose use, local response
Monitoring for Bacitracin
local response
Monitoring for Mupirocin
local response
Drug class for Nystatin
oral/topical antifungal
MoA for Nystatin
binds to sterols in fungal cell membrane, increasing cell permeability
Indications for Nystatin
topical skin & mucosal candida infections only
SE/ADRs for Nystatin
N/D, bitter taste, contact dermatitis, SJS
Contra-indications for Nystatin
hypersensitivity
Dx-Dx interactions for Nystatin
none
Monitoring for Nystatin
local response
PG category for Nystatin
PG C
Drug class for Ciclopirox Olamine
topical antifungal
MoA for Ciclopirox Olamine
inhibits uptake of precursors of macromolecular synthesis inhibiting fungal cell membrane formation
Indications for Ciclopirox Olamine
dermatophytes, candida, P orbiculare
SE/ADRs for Ciclopirox Olamine
HA, alopecia, dry skin, burning, stinging
Contra-indications for Ciclopirox Olamine
- hypersensitivity
- avoid occlusive dressing
Dx-Dx interactions for Ciclopirox Olamine
none
Monitoring for Ciclopirox Olamine
local response
PG category for Ciclopirox Olamine
PG B
Drug class for Fluconazole
oral antifungal
MoA for Fluconazole
alters permeability of fungal cell wall
Indications for Fluconazole
candida & dermatophyte fungal infections; crytococcal meningitis (AIDS)
SE/ADRs for Fluconazole
N/V, HA, seizures, dizziness, increase cholesterol; chemical hepatitis, SJS
Contra-indications for Fluconazole
hypersensitivity; marked renal or hepatic disease
Dx-Dx interactions for Fluconazole
HMG-CoA (statins) increase risk rhabdomyolysis
Monitoring for Fluconazole
response
PG category for Fluconazole
PG C
Drug class for Terbinafine
oral/topical antifungal
MoA for Terbinafine
inhibits sterol synthesis & disrupts fungal cell wall
Indications for Terbinafine
- oral: onychomycosis
- topical: tinea pedis
SE/ADRs for Terbinafine
HA, fever, rash, pruritis, increase AST/ALT
Contra-indications for Terbinafine
marked hepatic or renal dysfunction; PG (oral)
Dx-Dx interactions for Terbinafine
- tricyclic antidepressants (increase toxicity of TCA)
- decrease codeine effectiveness
- cimetadine increase serum level
Monitoring for Terbinafine
hepatic function, CrCl, CBC; response
PG category for Terbinafine
PG B
Drug class for Acyclovir
nucleoside anti viral oral/topical
MoA for Acyclovir
blocks herpes virus nucleic acid synthesis
Indications for Acyclovir
HSV-1, HSV-2, VZV, EBV, CMV, HHV-6 (tx & suppression)
SE/ADRs for Acyclovir
N/D, HA, nephritis, tremors, delirium, seizures w/ overdose
Contra-indications for Acyclovir
hypersensitivity
Dx-Dx interactions for Acyclovir
- probenicid, cimetidine increase concentration (risk neuro & renal toxicity)
- acyclovir decreases elimination of MTX
Monitoring for Acyclovir
CrCl, response
PG category for Acyclovir
PG B
Drug class for Tretinoin
acne topical
MoA for Tretinoin
bind to RARs & RXRs to regulate gene expression & increases epidermal cell turnover
Indications for Tretinoin
acne vulgaris & adjunct for tx skin photoaging
SE/ADRs for Tretinoin
erythema, dryness, stinging, pigmentation changes, potent teratogen
Contra-indications for Tretinoin
hypersensitivity
Dx-Dx interactions for Tretinoin
astringents, abrasives, drying agents
Monitoring for Tretinoin
PG, response
PG category for Tretinoin
PG C
Drug class for Isotretinoin
acne oral
MoA for Isotretinoin
undefined to normalize keratinization in sebaceous gland follicle & inhibit sebaceous gland size & function; reduces P. acne numbers
Indications for Isotretinoin
oral tx of refractory, severe cystic acne
SE/ADRs for Isotretinoin
dryness, itching, HA, corneal opacities, anorexia myalgias, arthraglias, hyperostosis, lipid increase, abnormal menses, bronchospasm, photosensitivity, IBD, hepatotoxicity, premature epiphyseal closure
Drug class for Benzyl Peroxide
acne topical
MoA for Benzyl Peroxide
undefined but maybe antimicrobial activity against P. acnes, peeling & comedolytic activity
Indications for Benzyl Peroxide
acne vulgaris
SE/ADRs for Benzyl Peroxide
dry skin, pruritus, peeling, sunburn, oxidant (may bleach hair or fabrics), contact sensitizer (1%)
Contra-indications for Benzyl Peroxide
hypersensitivity
Dx-Dx interactions for Benzyl Peroxide
none
Monitoring for Benzyl Peroxide
response
Drug class for Adapaline
acne topical product
MoA for Adapaline
retinoid-like compound, a modulate or cellular differentiation, keratinization, & inflammatory processes, all of which features in the pathology of acne vulgaris
Indications for Adapaline
mild to moderate acne
SE/ADRs for Adapaline
sun sensitization, irritation of skin; dryness, erythema of skin, stinging
Contra-indications for Adapaline
broken, abraded, sunburned, or eczematous skin
Dx-Dx interactions for Adapaline
Vitamins ADEK may amplify photosensitization effect
Monitoring for Adapaline
skin irritation, photosensitization
PG category for Adapaline
PG C
Drug class for Permethrin
topical pediculicide (antiparasitic agent)
MoA for Permethrin
inhibits Na channel in parasite cell membrane disrupting nerve transmission causing paralysis & death
Indications for Permethrin
5% cream-scabies
1% cream rinse-head lice
SE/ADRs for Permethrin
skin irritation
Contra-indications for Permethrin
external use only
Dx-Dx interactions for Permethrin
none
Monitoring for Permethrin
skin irritation, resolution of parasitic infection
PG category for Permethrin
PG B
Drug class for Triamcinolone acetone 0.025%
topical steroid intermediate efficacy
MoA for Triamcinolone acetone 0.025% & 0.5% & Clobetasol proprionate
attaches to GR receptor & inhibits protein synthesis
Indications for Triamcinolone acetone 0.025% & 0.5% & Clobetasol proprionate
anti-inflammatory
SE/ADRs for Triamcinolone acetone 0.025 & 0.5% & Clobetasol proprionate
striae, easy brushing, fat distribution changes, skin atrophy, hyperglycemia, HPA suppression, HTN, increases susceptibility to infection, myopathy, behavioral disturbances, cataracts
Contra-indications for Triamcinolone acetone 0.025% & 0.5% & Clobetasol proprionate
gastric ulcer, osteoporosis
Dx-Dx interactions for Triamcinolone acetone 0.025% & 0.5% & Clobetasol proprionate
NSAIDs, immunosuppressants
Monitoring for Triamcinolone acetone 0.025%& 0.5% & Clobetasol proprionate
long term use: lipids, glucose, CrCl, response
PG category for Triamcinolone acetone 0.025% & 0.5% and Clobetasol proprionate
PG C
Drug class for Triamcinolone acetonide 0.5%
topical steroid high efficacy
Drug class for Clobetasol proprionate
topical steroid highest efficacy
When are side effects more likely with Clobetasol proprionate?
With occlusive dressings
Drug class for Calcipotriene
psoriasis drug: topical Vit D
MoA for Calcipotriene
regulates skin cell production & proliferation
Indications for Calcipotriene
moderately severe plaque psoriasis
SE/ADRs for Calcipotriene
burning, itching, dry skin; skin atrophy, hyper-pigmentation, hypercalcemia
Contra-indications for Calcipotriene
hypersensitivity, hypercalcemia, Vit D toxicity
Dx-Dx interactions for Calcipotriene
none
Monitoring for Calcipotriene
[Ca+], response
Drug class for Sulfasalazine
psoriasis drug: oral
MoA for Sulfasalazine
undefined & local impact & systemic impact of decrease prostaglandins & other inflammatory cytokine production
Indications for Sulfasalazine
psoriasis (off label), psoriatic arthritis (off label), RA, ulcerative colitis, Crohn’s (off label)
SE/ ADRs for Sulfasalazine
HA, N/V/D, photosensitivity, hemolytic anemia, SJS/TEN
Contra-indications for Sulfasalazine
hepatic impairment
Dx-Dx interactions for Sulfasalazine
varicella virus vaccines increase concentration
Monitoring for Sulfasalazine
CrCl, LFTs, CBC; response
PG category for Sulfasalazine
PG B
Drug class for Methotrexate
psoriasis drug: oral folate antimetabolite
MoA for Methotrexate
DHFR inhibitor which inhibits proliferation & induces apoptosis of immune inflammatory cells
Indications for Methotrexate
psoriasis, RA
SE/ADRs for Methotrexate
vasculitis, seizures, alopecia, photosensitivity, hepatic fibrosis, bone marrow suppression, pulmonary fibrosis
Contra-indications for Methotrexate
other folate inhibiting drugs, renal or hepatic dysfunction, alcoholic cirrhosis
Dx-Dx interactions for Methotrexate
other folate inhibitors
Monitoring for Methotrexate
CrCl, liver function, CBC, CSR or PFTs, response
PG category for Methotrexate
PG X
What is the problem with Methotrexate & other folate inhibiting drugs?
they compete at protein binding sites & can increase MTX serum concentration w/ bone marrow suppression
Drug class for Hydroxyurea
psoriasis drug: oral antimetabolite
MoA for Hydroxyurea
undefined interference w/ DNA synthesis
Indications for Hydroxyurea
psoriasis (off label)
SE/ADRs for Hydroxyurea
edema, drowsiness, alopecia, vasculitis, myelosuppression, hepatotoxicity, peripheral neuropathy, pulmonary fibrosis
Contra-indications for Hydroxyurea
hyperuricemia, hepatic or renal impairment
Dx-Dx interactions for Hydroxyurea
live vaccines
Monitoring for Hydroxyurea
CBC, LFTs, CrCl, uric acid, CXR or PFTs; response
PG category for Hydroxyurea
PG D
Drug class for Etanercept
psoriasis drug:biologic response modifier (BRM) TNF alpha, beta blocker
MoA for Etanercept
blocks TNF alpha receptor binding thereby inhibiting TH1 activity
Indications for Etanercept
refractory psoriasis unresponsive to other modalities, psoriatic arthritis, JRA, ankylosing spondylitis
SE/ADRs for Etanercept
HA, URIs, activation or reduced resistance to serious infection, anemia, marrow suppression, exacerbation CHF & demyelinating disorders
Contra-indications for Etanercept
TB, HIV, Hep B, CHF
Dx-Dx interactions for Etanercept
none
Monitoring for Etanercept
IPPD, LFTs, CBC, response
PG category for Etanercept
PG B