{"id":5784,"date":"2025-09-12T09:52:37","date_gmt":"2025-09-12T09:52:37","guid":{"rendered":"https:\/\/optimumdermatology.com\/ozodis-knifi\/"},"modified":"2025-10-16T13:40:31","modified_gmt":"2025-10-16T13:40:31","slug":"ozodis-knifi","status":"publish","type":"page","link":"https:\/\/optimumdermatology.com\/en\/ozodis-knifi\/","title":{"rendered":"Nodular Prurigo"},"content":{"rendered":"\t\t
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\n\t\t\t\tNodular Prurigo\t\t\t\t<\/h1>\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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Definition<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Nodular prurigo is a chronic dermatologic condition characterized by intense pruritus and the presence of multiple hyperkeratotic nodules, predominantly distributed on the extremities.<\/p>

Epidemiology<\/strong>
The condition commonly affects patients with a history of moderate to severe atopic dermatitis\u2014seen in 3 out of 5 cases\u2014but is also associated with:<\/p>

  • Chronic kidney disease (CKD)<\/li>
  • Liver failure<\/li>
  • Neuropsychiatric disorders (e.g., depression, obsessive-compulsive disorder)<\/li>
  • HIV infection
    The age of onset is typically between 20 and 60 years and occurs equally in both sexes.<\/li><\/ul>

    Pathogenesis<\/strong>
    The disease is driven by type 2 inflammation, primarily mediated by interleukins 4, 13, and 31. These cytokines enhance the perception of itch\u2014particularly neuropathic itch\u2014leading to mechanical trauma caused by scratching. This activates fibroblasts, resulting in lichenification and nodule formation.<\/p>

    Morphology<\/strong>
    Lesions appear as multiple, symmetrical, lichenified, and elevated nodules, often grouped and located on the shins and forearms, especially on the extensor surfaces (less commonly on the trunk or face). They vary in:<\/p>

    • Number:<\/strong>Few to many<\/li>
    • Form:<\/strong>From small papules to large firm nodules<\/li>
    • Size:<\/strong>1\u20133 cm
      Early lesions are erythematous and later evolve into hyperpigmented nodules with scaling and crusts from intense scratching.<\/li><\/ul>

      Clinical Presentation<\/strong>
      Patients report intense, often nighttime, itching that is distressing and leads to scratching-induced trauma. This perpetuates lesion formation and, in chronic phases, results in scarring and post-inflammatory hyperpigmentation.<\/p>

      Course<\/strong>
      The disease follows a chronic and persistent course with flare-ups and remissions. It is frequently associated with high psychological stress and significantly impairs quality of life.<\/p>

      Diagnosis<\/strong>
      Diagnosis is clinical, based on lesion morphology, distribution, and the patient’s symptoms.<\/p>

      Complications<\/strong><\/p>

      • Secondary infections due to lesion contamination<\/li>
      • Scarring and post-inflammatory hyperpigmentation<\/li>
      • Major psychological burden and reduced quality of life<\/li><\/ul>

        Therapeutic Approaches<\/strong><\/p>

        Topical Treatments:<\/strong><\/p>

        • Potent corticosteroids (creams or ointments) applied under occlusion<\/li>
        • Topical calcineurin inhibitors (e.g., tacrolimus) and vitamin D analogs (e.g., calcipotriol) have shown promising results<\/li>
        • Intralesional corticosteroid injections (typically triamcinolone)<\/li>
        • Emollients and moisturizers to reduce scaling and mildly relieve pruritus<\/li>
        • Capsaicin applied at night has been reported to reduce pruritus and the formation of new lesions<\/li><\/ul>

          Systemic Treatments:<\/strong><\/p>

          • Antihistamines:<\/strong>Moderate efficacy, particularly for nocturnal pruritus<\/li>
          • Cyclosporine:<\/strong>Highly effective, though relapses may occur after discontinuation<\/li>
          • Methotrexate:<\/strong>Also effective, but contraindicated in women of reproductive age or those planning pregnancy<\/li>
          • Gabapentin\/Pregabalin:<\/strong>Can be co-administered with other treatments to reduce neuropathic itch<\/li><\/ul>

            Emerging Treatments:<\/strong><\/p>

            1. Dupilumab:<\/strong>Subcutaneous administration every 2 weeks. Blocks IL\u20114\/IL\u201113 signaling via IL\u20114R\u03b1. Highly effective in reducing both pruritus and lesion count.<\/li>
            2. JAK1 inhibitors:<\/strong>Agents like upadacitinib and abrocitinib, taken orally once daily, demonstrate rapid onset and high response rates, especially in refractory cases.<\/li>
            3. Nemolizumab:<\/strong>Targets the IL\u201131 receptor. Currently under clinical investigation. Shows reduction in itch and improvement in quality of life.<\/li>
            4. Omalizumab:<\/strong>Anti-IgE monoclonal antibody used off-label in select cases of recurrent or allergen-triggered pruritic eruptions, with reported favorable outcomes.<\/li><\/ol>

              At Optimum Dermatology, our expert physicians and innovative treatments ensure the best possible results.<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"

              Nodular Prurigo Definition Nodular prurigo is a chronic dermatologic condition characterized by intense pruritus and the presence of multiple hyperkeratotic nodules, predominantly distributed on the extremities. EpidemiologyThe condition commonly affects patients with a history of moderate to severe atopic dermatitis\u2014seen in 3 out of 5 cases\u2014but is also associated with: Chronic kidney disease (CKD) Liver […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"tpl-side-nav.php","meta":{"footnotes":""},"class_list":["post-5784","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/optimumdermatology.com\/en\/wp-json\/wp\/v2\/pages\/5784","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/optimumdermatology.com\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/optimumdermatology.com\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/optimumdermatology.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/optimumdermatology.com\/en\/wp-json\/wp\/v2\/comments?post=5784"}],"version-history":[{"count":4,"href":"https:\/\/optimumdermatology.com\/en\/wp-json\/wp\/v2\/pages\/5784\/revisions"}],"predecessor-version":[{"id":5788,"href":"https:\/\/optimumdermatology.com\/en\/wp-json\/wp\/v2\/pages\/5784\/revisions\/5788"}],"wp:attachment":[{"href":"https:\/\/optimumdermatology.com\/en\/wp-json\/wp\/v2\/media?parent=5784"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}