Nail psoriasis is most commonly characterized by pits, 'salmon' or oil patches, onycholysis and nail dystrophy. Pits develop from tiny psoriatic lesions located in the most proximal matrix region. These produce parakeratotic mounds which remain on the nail plate surface as long as the growing nail is covered by the proximal nail fold; they then break off and leave a small depression in the nail surface. The depth of the pits reflects the severity of the lesion, their longitudinal diameter their duration. Salmon spots are psoriatic lesions in the distal matrix or nail bed. There is an inflammatory, mainly lymphocytic infiltrate in the upper dermis with wide capillaries, mild to moderate spongiosis with lymphocytic exocytosis and parakeratosis that may contain single neutrophils or small neutrophilic abscesses. Serum imbibition of the parakeratosis is probably the cause of their yellowish colour. When such a lesion reaches the hyponychium air penetrates under the nail plate and onycholysis develops. Psoriatic leukonychia is characterised by a more or less circumscribed area of parakeratosis in the nail plate. Splinter haemorrhages represent thrombosed, ectatic psoriatic capillaries.

Acrodermatitis continua suppurative of Hallopeau may show different lesions: alterations known from pustular psoriasis, a spongiotic variant, or both spongiform pustules and spongiotic vesicles.

Reiter's disease essentially exhibits psoriasiform changes, but the pustular component may be more pronounced and there is usually more erythrocyte extravasation.

Natural Treatments For Psoriasis

Natural Treatments For Psoriasis

Do You Suffer From the Itching and Scaling of Psoriasis? Or the Chronic Agony of Psoriatic Arthritis? If so you are not ALONE! A whopping three percent of the world’s populations suffer from either condition! An incredible 56 million working hours are lost every year by psoriasis sufferers according to the National Psoriasis Foundation.

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