Palmoplantar pustulosis https://en.wikipedia.org/wiki/Pustulosis_palmaris_et_plantaris
Palmoplantar pustulosis est dermatitis pustulosa, longa et recurrens (id est pustulosis vel pustularis psorias), quae tantum in palmis et plantis locata est, histologice intraepidermalis pusillis neutrophilicis repleta. Retinoida systemica sola, et in compositione cum photochemotherapy, ad meliora symptomata palmoplantar pustulosis adhibentur.

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Acitretinum orale efficax est pro hoc genere psoriasis.
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References Palmoplantar Psoriasis 28846363 
NIH
Palmoplantar psoriasis – genus psoriasis quod maxime cutem in palmis et plantis afficit. Cutis densam exhibet, quae vel arida, vel pustulosa, vel utriusque speciei mixtae potest esse.
Palmoplantar psoriasis is a variant of psoriasis that characteristically affects the skin of the palms and soles. It features hyperkeratotic, pustular, or mixed morphologies.
 Tumor Necrosis Factor Inhibitors 29494032 
NIH
Tumor necrosis factor (TNF)-alpha inhibitors, including etanercept (E), infliximab (I), adalimumab (A), certolizumab pegol (C), and golimumab (G), are biologic agents which are FDA-approved to treat ankylosing spondylitis (E, I, A, C, and G), Crohn disease (I, A and C), hidradenitis suppurativa (A), juvenile idiopathic arthritis (A), plaque psoriasis (E, I and A), polyarticular juvenile idiopathic arthritis (E), psoriatic arthritis (E, I, A, C, and G), rheumatoid arthritis (E, I, A, C, and G), ulcerative colitis (I, A and G), and uveitis (A).