Clinical examination-based diagnostic criteria for chronic p
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Till now, there was no diagnostic criteria for diagnosis of psoriasis.

But recently, a Delphi consensus of international experts proposed a clinical examination based diagnostic criteria for chronic plaque psoriasis in adults –

It has one essential criterion and eight supportive criteria. For diagnosis of psoriasis, one essential criterion and four or more supportive criteria should be present.

Essential criteria: well-demarcated lesion(s) with or without silvery/white scales.

Supportive criteria:
1. Lesions are pink-to-red in colour, in deeply pigmented skin, lesions may be grey in colour
2. Lesions vary in size
3. Lesions are palpable
4. Lesions are symmetrically distributed
5. Family history of psoriasis in first?degree relatives
6. Nail involvement (e.g. Pitting, onycholysis and subungual hyperkeratosis of the nails)
7. Joint pain and/or stiffness
8. Itching

This definition will be applied in future epidemiological studies for psoriasis and to guide physicians during their daily clinical practice.

Source: https://onlinelibrary.wiley.com/doi/10.1111/bjd.18968
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