3. AGE AT ONSET
Bimodal peak
16 and 22 years 57 and 62 years
Type I Type II
Hereditary, strongly HLA associated
(particularly HLA‐C:06:02),
early onset and more likely to be severe.
Sporadic, HLA unrelated,
of late onset and often mild.
6. Presentation
•Well demarcated
•Erythematous
•Scaly ( silvery white scales)
•Indurated
•Plaques
•Extensors
•Always look for lesion on scalp and genitalia and nail
•Ring of woronofff may be present
•Koebners phenomenon may be seen
8. Clinical variants of psoriasis
Acute guttate psoriasis
• Sudden onset of a shower of small lesions, It is more common in
children and young.
• It frequently follows several weeks after phanyngitis caused by group A
streptococci
9. Unstable psoriasis
Recognized precipitants for unstable psoriasis
•Withdrawal of systemic or potent topical corticosteroids
•Treatment with irritants such as tar or dithranol
•Acute infection
•Hypocalcaemia
•Severe emotional upset.
12. Complications and comorbidities
•Stress
•Other autoimmune disorders like IBD,Vitiligo
•Metabolic syndrome
•Malignancy because of chronic inflammation
•Hepatobiliary disease- non alcoholic fattyliver
13. CLASSIFICATION OF SEVERITY
•The PASI ( psoriais area and severity index)
•Erythema, scaling and induration are graded in each region
each with a score 0-4.
14. Bed side tests
•Grattage test and Auspitz sign
•Scrape the lesion with slide. The scales gets
accentuated. On further scraping. Reddish membrane
appears which is called as Berkley's membrane. On
removal of this pin point bleeding appears.
21. NEW DRUGS
Apremilast - inhibitor of phosphodiesterase 4,
Tofacitinib oral inhibitor of Janus kinases JAK1 and JAK3
Ponesimod modulator of the sphingosine‐1‐phosphate
receptor (S1PR1).
23. PSORIATIC ARTHRITIS
seronegative inflammatory arthritis, which occurs in up to 40% of patients
with moderate to severe psoriasis.
CASPAR (Classification Criteria for Psoriatic Arthritis) criteria, with 99%
sensitivity and 91% specificity .
24. 1. peripheral mono‐ or asymmetrical oligo‐arthritis, predominantly affecting
the distal interphalangeal joints,
2. symmetrical rheumatoid‐like pattern,
3. arthritis mutilans (a rare severe deforming arthritis of the hands and feet)
4. axial disease with spondylitis and/or sacro‐iliac disease.
5. Dactylitis
• Asymmetric oligo‐arthritis is the commonest variety followed by symmetric
polyarthritis.
25. • Clinical features
• Symptoms of inflammatory joint disease (early morning stiffness and joint
swelling) .
• Early morning back stiffness
• Heel pain (a manifestation of enthesitis of the Achilles tendon) or plantar fasciitis
• Clinical examination may reveal evidence of dactylitis (sausage fingers) or
swollen or tender joints.
• . The nail changes of psoriasis will be present in up to 80% of patients.
