Investigations
1st investigations to order
clinical diagnosis
Test
Result
Test
Usually no tests are necessary.
Result
features of psoriasis
Investigations to consider
skin biopsy
Test
Result
Test
Order skin biopsy only when diagnosis is in doubt.
Biopsy does not always show classic pathological features.
Result
intra-epidermal spongiform pustules and Munro neutrophilic microabscess within the stratum corneum; in addition to these classical features, others include focal parakeratosis and epidermal acanthosis with dilated capillaries within dermal papillae
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