therapeutics Flashcards
sun protection advice
sun protection-behaviour, sunscreen, clothing, window filter
CAD
sun protection advice, topical CS/CI,
pred 2w, AZA(B),Cya(B),
MMF(C), AM(C), PUVA/NBUVB densisitation((B, risky!)\
PMLE/AP/SU/HV-
topical CS/CI, AH, PUVA/NBUVB desensitisation, AM, AZA, cyA
photodrug rxn
memo/drug cessation(crucial,no alt, limited time-ct) allergen avoidance(patch/photopatch)
Pemphigus
pred 0.75-2mg/kg/d
↑25%qw↓10/5/2.5/1mg(40/20/10/5mg) q w
PV-MMF/AZA/dapsone/(A); MTX/CPA(B);
PF- MMF/AZA(A); Dapsone/MTX/CPA(B);
Rx considerations immunobullous
severity: BSA,disease area index; mucosal involvement,comorbidities, CI
pemphigoid
(0.3-1mg/kg/d) doxy/nicotinamide(A)
BP-AZA/MMF(A); dapsone/MTX/CPA(B)
indications for +adjuvant
> 1mg/kg/d pred, freq flares on tapering/morbidity or CI to steroid)
EBA-
dapsone/colcichine/pred(C); IVIG/ritux(B)
DH
( dapsone/pred);
Cx: MMP
Mucosal- MMP- ocular, ENT, GE ( OGD/colono) strictures
Treatment failure defn
progression/failure epitheliasation >3w pred(1.5mg/kg/d+-adjuvant)
immunobullous Treatment failure Recalcitrant disease-options
IvIG(A)/plasmapharesis, rituximab(B+-infx Cx)
role of dsg1/3 activity q6-12m;baseline in PV/PF
Monitoring-dz activity?stop Rx
FDE Rx:·
culprit drug/Xreacting, topical CS/Erosive-PP,gbFDE, PO pred
Mgt principles for vasculitis
symptomatic, 1st line, recalcitrant, 3rd line, specific
extracutaenous- RAI
Triggers- drug, causative dz-infx;
Topicals/leg elevation/NSAID AH aspirin
SVV
- palpable purpura
- hemorrhagic blister,necrosis
1.Colchicine(B, RCT-no effect but relapse in responders with cessation)+/-dapsone(B)
penicilin(ASOT)
- Prednisolone
recalcitrant-Steroid sparing-AZA, MTX, CyA,
CPA,IvIg, plasmapharesis
ANCA+ vasculitis
comanage RAI/renal/pulm, induction of remission(3-6m)-pred+MTX, maintenance(>24m) pred+MTX/AZA+Bactrim+bactroban(nasal)
CTD-associated vasculitis Rx
SLE- AM(A)-60% ↓flares; MTX(B);
RA-pred/penicillamine, MTX/AZA/CyP
PAN-prognosis
10% cutaneous benign relapsing prognosis, surveillance q6m systemic involvement(rare, 0/79 @7,7/9 @4y; pANCA);
PAN-Rx
Hep B associated(sPAN; GE antiviral IFN);
Rx all grade (B)
1st: NSAID/pred/dapsone/colchicine + wound care/dressings/infx
2nd: AZA, MMF, MTX, CPA
3rd: HBOT, ritux, IVIg, inflix, iloprost/bosentan(vasodilator, prostacyclin)
LV- Mgt principles
1.exclude 2-CTD, hypercoagulable, malignancies-solid haematological;
- 1st:smoking cessation, pentoxyfylline, aspirin, pred
2nd: /AZA MMF(C)
admit: methylpred/IvIg/ritux/HBOT(B) - DIRECTED Rx-thrombotic dz: warfarin, LMW heparin, Tissue plasminogen activator
- APS- danazol, HCQ; homocysteinemia- folic acid B6/12 supplement
DGI Rx
Rx: im ceftriaxone 1g OD( until 48H after clinical improvement)+ doxy/azithro(CT)
purpura fulminans Rx
Rx: ICU-abx(immediate/directed/mitigate immunosuppresion) supportive/inotropic/ventilatory/fluid; debridement;
Rx: stop warfarin, start vitK/heparin/protein C concentrate
purpura fulminans Q?
Ask: HD instability+ sepsis+immunocompromise/neutropenic, Phx CTD/APS/infx, warfarin
purpura fulminans ddx
1.occlusion: a)ecthyma gangrenosum b)septic vasculitis/emboli- c)lucio’s
- acquired protein C dysfunction
a) DIVC-meningococcemia/strep/saureus/Hib
b) warfarin necrosis - catastrophic APLS
- Calciphylaxis
CCLE prognosis
counsel (Risk of progression to SLE -DLE/tumid lupus10%,SCLE 50%)
CCLE counselling includes
sun protection(A)/smoking cessation(B*) *Affect severity/QOL not AM efficacy; vit D levels controversial role
CCLE Rx
indications for systemic(evidence?)
Potent Topicals-CS/TCI(A)/ILK(C)
Systemic-widespread recalcitrant scarred disfigured
1st:Antimalarials(A);
2nd +Pred(C)(severe,2-4 w taper +AM);MTX(B,wenzel 2005 SCLE/Localised DLE not dissemin.)
3rd: MMF / AZA; dapsone/Acitretin(A);Thalidomide/IVig/clofazamine
DLE Scalp Rx, indications for systemic?
> 10% SSA/>8W Rx failure ILK→ AM(A), Isotretinoin(B↓TE)acitretin(A), MTX
DMS Mgt:
+myositis-RAI comanagement-1- 2mg/kg pred
1) cutaneous: photoPx,
1st: topical CS/TCI, AM(B),
2nd: acute disabling(all B) pred /MTX/AZA/MMF
2) Longitudinal Malignancy surveillance 6 mox 3 y
DMS and malignancy-local data
risk factors? onset?
(local 10 mo onset)
Phx malignancy, poor Rx response, unexplained dz flares ( *Ang 2000; ↑malignancy in myositis)
Mgt principles MORPHEA:
- localised/generalised,* vs systemic( refer RAI+ nifedipine, aspirin);
- active:
morphea/SSc
- 1st(B):Potent topical CS/ TCI/calcipotriol/ILK;
2.(B):*UVA1/PUVA/NBUVB
MTX(>6mo)+-Pred(taper 2-4 w)/pulse methylpred,pred(6m) MMF
Mgt PRS
PRS, filler( stable >1 y photographic)
SCLEREDEMA Mgt-
cause(self resolving/no treatment/hyerglycemia independent); disability;
PUVA/NBUVB/CS
scleromyxedema,prognosis, Rx
Challenging(C), chronic persistent,MM/systemic(poor)
IvIG** CS(PO/topi/ILK);
chemo-melphalan(hematological malignancy, sepsis)
high dose dexa; IFNA, Cya,
LM: prognosis, Rx
skin-limited, good prognosis, no Rx
LP prognosis, Mgt:
self limiting, 20% relapsing, no RCT 1.topical CS/CI/calciportriol, 2.pred, AM, Acitretin 4. CyA sulfasalazine
LPP Rx -topicals, systemic (indications)
> 10%SSA,Rx failure>3m; AM(B)/pred(C); CyA/MMF/acitretin(C)
oral LP mgt principles
- aim-symptoms/ulcers/malignancy monitoring(0.4-5% transformation),biopsy
2.educate:smoking/alcohol/diet; oral hygiene, remove dental amalgam(97% benefit vs 40% +PT-amalgam, Me) - Rx oral candida, chlorhex mouthwash(plaque)
triamcinolone,CI, topical CyA,
PO pred5-10d/AZA/AM
PRP prognosis
Prognosis: classic(1,3, 80% 1-3 y remission)
Mgt- PRP
- topical CS/calcineurin inhibitor
- 1st:MTX+-acitretin(B)
2nd: Cya(C), AZA(C)
3rd: photoRx,
(biologics) TNFa inhibitor(B)-etanercept, adalimumab infliximab, ustekinumab(C)( IL 12-23 inhibitor)
DRESS prognosis, Rx:
10% mortality, systemic involvement
supportive, pred(B), tapered 6-8w; other: pulse methylpred, CyA
AGEP Prognosis, Rx:
- self limiting favorable
- admit, BP/T, withdrawal drug, supportive( topical cs/AH),
- extensive: short course pred
what is the role of drug testing in AGEP? -sensitivity?
WHEN ?HOW?
patch testing sensitivity 80%,
post 6w-6mo
crushed tablet, dilute 30% petrolatum/water, 0.1-10%(SCAR), back, reading 48/96H/D7
GPP mgt
Rx:
acitretin/CyA/MTX(B) +clox(antistaph) ;
2nd: biologic, PUVA
SJS -TEN supportive Rx
- MDT, burns unit/prompt withdrawal causative drug/all unnecessary meds
SJS TEN Prognosis:
SCORTEN- mortality ( score 1-5) ( 40, malignancy, HR >120, BSA detachment>10%, urea>10mmol/L, glucose>14 mmol/L, HCO3-
SJS TEN specific Rx, EVIDENCE?
absent RCTs, ALL (B)
1. CyA(3-5mg/kgIBW/d,IV/PO until epitheliasation)
open phase 2 trial reduced death rate/detachment progression)
2. IVIg( TD 2-3 g/kg Dx 3-4 d)
SGH: trend towards increased mortality)
- CS(SJS not TEN, 1-2mg/kg/d 3-7d, arrest dz progression/shortened recovery period)
- Other: plasmapharesis, anti TNFa inhibitors
Counselling for CADR
- Educated -avoidance medication/ class tolerated drugs(DPT)
- Documentation - Medic Awas card, Annotations,Letter, medical records, CMIS
- Xreactivity:
Counselling Xreactivity penicillin allergy?
- β-lactam +sulfur ring a)chemical side chain similarity of cephalosporin to penicillin
- 1st gen Cephalexin
Counselling Xreactivity anticonvulsants DRESS allergy?
- avoid all other aromatic anticonvulsants, consider nonaromatic i.e. valproate(not acute -hepatitis) anticonvulsants;
- 1deg relative- increased risk
Aromatic -anticonvulsant
carbamazepine, phenytoin, phenobarbital, lamotrigine, felbamate, oxycarbamazepine, zonisamide;
Non-aromatic - anticonvulsant
levetiracetam, valproic acid,
Rx Sarcoidosis- principles
Rx(lupus pernio/extent/disfigurement ):
- potent topicals, ILK,
- pred(1mg/kg/d 4-6w slow taper, AM(C), MTX(B) ,
- other ( surgery, IL chloroquine, thalidomide, tetracyclines)
Sweet’s Prognosis, RX
benign untreated persist months spontaneous involution 30% recurrences
- pred 0.5-1mg/kg/d-duration4-6w,tapering 2-3 months suppressive,
- KI, dapsone, colcicine, NSAID, monitor T/FBC/CRP/ESR for response
- Local symptomatic treatment(bulla, compresses);
- evaluate for underlying malignancy
sarcoidosis associations?
Ax Malignancy-sarcoidosis lymphoma syndrome,(ROS, FHx, breast/testicle self exam, age appropriate cancer screen, yearly for 5 years, lifestyle)
AI: thyroiditis, IDDM, Sjogrens, thrombocytopenia, haemolytic anemia
Rx PG
1.limited
Behcet’s Rx
lidocaine/topical CS/ILK; colchicine/dapsone(B);
Severe mucocutaneous- thalidomide, MTX, pred
systemic: pred/AZA/MMF/Cya(B); CYP/IVig
Rx: M marinum
other?
single agent 6-12w
Bactrim,mino, doxy,klacid
surgical excision
leprosy Rx multibaciliary
(12-24DCR)
dapsone 100mg OD, clofazimine300mg x 1m, 50mg OD Rifampicin 600mg 1x m;
leprosy paucibaciliary:
6DR( Dapsone 100mg OD, rifampicin600mg 1xm)
leprosy mgt priciples
Notify, psychosocial support+ clinical assessment household contacts; discharge- clinical cure, -ve SSS, biopsy; 3m on Rx SSS, then 6 mo relapse rv, yearly SSS
Rx leprosy reaction Type 1:
refer infx, admission/limb immobilisation/symptomatic/orthop nerve decompression
Type 1: ct MDT,pred ,
Rx leprosy reaction Type 2
type 2: ct MDT, pred
SPTCL Rx
Rx Solitary- surgical, RT,Prednisolone, CyA, MTX; Refractory / haemophagocytic syndrome Multiagent doxorubicin-based chemotherapy ± radiotherapy / stem-cell transplant
TB Rx(monitoring?)
notify, cutaneous infection, AFB c/s subtype , baseline glu(Z), VA, LFT, Cr, HIV, monitor LFT, VA,qm x 3m 2HREZ( 5,10,15, 25mg/kg/d)+ 4HR+ pyridoxine10mg OD
TBprognosis if untreated/treated?
untreated-risk of miliary dissemination,
CRP Rx
po minocycline 50% effective, isotret/acitretin/salicyclic acid, azithro
Prurigo pigmentosa Rx, prognosis
minocycline(antiinflammatory,neutrophil chemotaxis);
dapsone, doxy,isotret/NBUVB,hydroquinone/azelaic;
Px: good but relapsing
MF principles, RX
- Goal-prevent disease progression ;Refer Cutaneous Lymphoma
- MDT Oncologist / Radiation tumor( interferon; cost, convenience, toxicity Sepsis)
- skin-directed treatment; Long term surveillance
- (All B) Topical Steroids /nitrogen mustard/ tazarotene gel
- PUVA(psolaren 0.6mg/kg/d) / Re-PUVA/Narrow band UVB
- RT/EBT/ IFN-a; ECP;
chemotherapy doxorubicin, cyclophosphamide, vincristine,prednisolone (CHOP). MonoclonaL Ab: denileukin diftitox, BMT
LYP/PCACL Prognosis?
Rx:excellent prognosis, size, surveillance- systemic lymphoma
LYP/PCACL Rx,
- Observation, Topical steroids imiquimod ;
- generalised with scarring -MTX PUVA / NBUVB,tazoretene -localized/large:Surgical excision, RT
PLEVA/PLC prognosis,
Prognosis: Spontaneously resolve several w/progress PLC(mo-y)
PLEVA/PLC Rx
Rx: PO Emycin 250mg qds >2m(B); tetra(C), photoRx/MTX/CyA(C)
extranodal NKT lymphoma prognosis, Rx
Rx poor prognosis; oncologist ,ENT ,Multiagent chemotherapy,radiotherapy
B Cell lymphomas prognosis
PCMZL upper limbs Excellent
PCFCL H&N, trunk Excellent
PCLBCL, LT,poor 5-year survival 50%
B Cell lymphomas PCMZL PCFCL RX
:localised Sx/RT Multifocal- Rx symptomatic ILK/ IFN-α/rituximab
PPK Mx:
self-paring/trim nails, avoid trauma/friction, emollient, PP soaks(blisters)
Topical Keratolytics retinoids calcipotriol, acitretin
cGVHD
Rx: photoprotect,concomitant photosensitising(voriconazole,levoflox) topicals, progressive(C) :po pred, AM, acitretin,photoRx(malignancy) refer PT
aGVHD
Rx: topicals, PO pred/iv methylpred(1mg/kg BD) 50% controlled, 2nd: MMF, biologics
LSA
-Rx: 1.Control with ↓SE, 1st: superpotent topical CS 3m(B) circumcision(B) 2nd: >3m topical CS/TCI(lack safety data); surgery/dilator; 2.psychosexual counselling 3. VIN/genital SCC( X 2-5%)
EI
Rx: underlying cause, MTB, supportive- rest, stocking, NSAID, MMF, CS
HV
Photoprotect, tinted windows
Phototherapy, b carotene fish oils
AM, AZA, CyA
Thalidomide
EPP
1) photoprotect VL (Ti,O, ZnO 400-410nm)
2) skin- b carotene m a MSH
3) cholestasis/cholelithiasis - cholestyramine/charcoal
RPC
Rx:topical(CS, retinoid, salicylic acid, methol)AH(doxepin)amitryptilline,CS retinoid,Abx, MTX,photoRx; avoid trauma/destructive-cryo laser ablation
cut mets
mgt:palliative/Sx/RT/hormonal/Chemo(large aggressive)
aneoderma
Rx: unsuccessful, ILK, aspirin/dapsone/antimalarials/surgical excision-scar formation
degos
Rx: aspirin, clopidogrel., heparin pentoxyfylline, no effective systemic
NLD
independent of glycemic control, potent topical/ILK, target microangiopathy
(stanazolol, pentoxyfylline)
NXG
Rx: none recommended, alkylating(chlorambucil),PO/ILK pred, Sx, RT, AM, MTX
Rx: RDS
asymptomatic self limiting, destructive/disseminated- PO CS, RT, excision, thalidomide
Prognosis XD
prognosis: self healing/persistent/progressive-organ dysfunction+CNS
XD
Rx: RT(airway), cyclophosphamide(mucosal)
xanthoma-
Cx: acute pancreatits
Rx: pharmacologic/dietary
fibrates- gemfibrozil, fenofibrate ( dysbetalipoproteinemia- plane, tuberous); imcrease lipoprotein lipSe, reduce VLDL synthesis
Rx GA
Rx: AM,CyA, MTX, dapsone, PhotoRx, biologics
OFG
Rx: Topical corticosteroids;doxy/mino/dapsone/MTX/Clofazimine
rhinoscleroma-
Rx: surgical, 6w-6m single tetra/sulfonamide/cipro
alopecia mucinosa
surveillance-rpt Bx MF; primary-ILK/top CS+mino/isotret/AM(C)+-cephalexin infx)
cutaneous plasmacytosis
Rx: chronic relapsing, pred/TCI/ILK/PUVA/CPA, favorable prognosis, low malignant transformation, ,
rX Hailey hailey,
general-clothes,friction/sweat/botox, CS/CyA/MTX/biologics, infective-antmicrobial/iodosorb, surgical excision/grafting/ablative(co2/alex)
angosarc prognosis
prognosis 5% 5Y
melanoma margins+ LND?
Rx: margins MIS/2mm( 0.5/1/2 cm); acral/facial- Mohs
St 1/2-ELND no survival benefit , SLND( first mets site) improved dz free survival ( not overall)
melanoma adj rx
Adj: St2/3 high risk resected e.g. IFN-a
Mets: palliative resection, RT, chemo( dacabarzine); immunoRx(IFN-a); molecular target( BRAF- vemurafenib; KIT- imatinib)
NMSC
Mgt: Low risk:Excision +4mm Margin /Photodynamic Therapy/5-Fluorouracil/ Imiquimod; High risk/SCC/nodular BCC- excision margin+4mm assessment; FU- 1/3/6 moX 5Y;High risk- life
MGT multiple NMSC high risk
1) FU 6-12mo,photoprotect, Low threshold Bx
2) Ablative,Acitretin,,Aggressive (Ex>6mm +margins;Mohs
3) Modulate immunosuppression /MTOR inhibitors
Acitretin dose chemoprevention
10 mg EODx2w; 10 mg ODx2w: 20 mg OD, upwards to 25mg or tail
Mgt: Low risk NMSC
Excision +4mm Margin
PDT/5-FU/ ImQd;
High risk/SCC/nodular BCC-
excision margin+4mm assessment
; FU- 1/3/6 moX 5Y;
Vismodegib MOA indication
Vismodegib Hedgehog pathway inhibitor; FDA-failed surgical/RT advanced /metastatic BCC, Gorlin; response 14.7 -20.3 months
Vismodegib ADR
ADR muscle spasms, alopecia, taste loss, weight loss, fatigue