Diagnosis and Management of Psoriasis and Psoriatic Arthritis
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Transcript Diagnosis and Management of Psoriasis and Psoriatic Arthritis
Diagnosis and Management of
Psoriasis and Psoriatic Arthritis
SIGN November 2010
Objectives
According to this new guideline:
Be
able to diagnose psoriasis
Know the recommended treatment in primary
care
Have an understanding of psoriasis
management in secondary care.
What are the characteristics of
psoriasis?
What risks are associated with
psoriasis or psoriatic arthritis?
Co Morbidities associated with
psoriasis
Diabetes
Hypertension
Hyperlipidaemia
Metabolic syndrome
Obesity
MI – young pt with
severe disease.
Low mood
Treatment - Topical
Short term potent steriod or potent steriod
plus calcipotriol gain improvement in
plaque psoriasis.
Long term treatment is a Vit D Analogue.
If unsuccessful then consider dithranol,
coal tar solution or tazaotene gel.
Vitamin D analogues
Calcipotriol and talcalcitol.
Dovonex,
silkis, curatoderm.
Dovobet (with betamethasone)
Analogues of vit D and affect cell division
and differentiation
Do not smell or stain
Coal Tar
Anti-inflammatory properties and antiscaling properties.
Crude coal tar most effective, but not
tolerated due to smell and mess.
Contact allergy or folliculits may occur.
Polytar, alphosyl HC, Cocois
Tazarotene
For plaque psoriasis.
A retinoid.
Less effective and more irritation than
calcipotriol.
Use sparingly on plaques only.
Clean and odourless.
Dithranol
Effective treatment for plaque psoriasis.
Irritation and staining of the skin.
Only on plaques.
Not in flexures or on the face.
Wear gloves to apply and wash afterwards.
Best used by specialist nursing staff.
Topical therapy
Therapy Efficacy
Remission Maintanence Patient
Coal tar
X
-
-
Steriods XXXX
XXX
X
XX
Dithranol XX
XX
-
-
Tazarotene
XX
XX
XX
XXX
XXX
XX
X
XX
Vit D
XXX
analogues
acceptability
Special Sites
Scalp – scalp preparations – salicylic acid
/ tar preparations. Vit D analogues and
steriods
Face and Flexures – more easily irritated.
Moderate
steriods short term
Vit D Analogues or tacrolimus ointment.
Assessing Psoriasis
PASI
- calculated based on
severity, intensity,
and surface area
Requires experience
at calculating the
score.
DLQI
Simple 10 questions,
assess effect on life.
Dermatology Life Quality Index
0-1 = no effect at all on patient's life
2-5 = small effect on patient's life
6-10 = moderate effect on patient's life
11-20 = very large effect on patient's life
21-30 = extremely large effect on patient's
life
Referral to dermatology
Diagnostic problem
Extensive disease
Occupational disability / time lost
Difficult places
Failure of topical therapy
Adverse reaction to topical
DLQI above 6
Generalised Pustular Psoriasis
Life threatening
complications.
May have
erythroderma.
Requires
hospitalisation.
Secondary Care
Erythroderma or generalised pustular
psoriasis need emergency referral to
dermatology.
These patients should have inpatient care.
Secondary Care - Phototherapy
Narrow band UVB phototherapy should
be offered if failure to topical therapy.
Three times weekly where practical
Systemic
In general poor studies to go on and of
short duration. However,
Severe or refractory psoriasis pt should be
offered tx with ciclosporin, methrotrexate,
acitretin.
If respond – shared care with primary
care.
Biological
Strong evidence base for infliximab (NNT
2) adalimumab, and etanercept (NNT 4).
Should be offered to pt who do not
respond to systemic therapies.