Treatment of Pruritus with Skin Breakdown

Initial Assessment and Management

The American College of Dermatology recommends reviewing all medications to rule out drug-induced pruritus, as 20-30% of generalized pruritus cases have a significant underlying systemic cause 2
A thorough skin examination is necessary to assess body surface area involved, presence of excoriations, secondary infection, and lichenification, according to the Journal of Clinical Oncology 1, 3
Consider skin biopsy if autoimmune skin disease is suspected or diagnosis is unclear, as suggested by the Journal of Clinical Oncology 1, 3

For mild disease, the British Journal of Dermatology recommends topical emollients applied liberally and frequently to restore skin barrier, and mild-to-moderate potency topical corticosteroids applied to affected areas 3-4 times daily 1, 4
For moderate disease, the Journal of Clinical Oncology suggests topical emollients as foundation of therapy, medium-to-high potency topical corticosteroids applied twice daily, and oral antihistamines such as fexofenadine 180 mg, loratadine 10 mg, or cetirizine 10 mg daily 1, 4
For severe disease, the Journal of Clinical Oncology recommends high-potency topical corticosteroids combined with emollients, oral antihistamines for symptomatic relief, and systemic corticosteroids: prednisone 1 mg/kg/day, tapering over at least 4 weeks 1, 3

Optimize wound healing by maintaining skin hydration with frequent emollient application and protecting broken skin from further trauma, as suggested by the Journal of Clinical Oncology and the British Journal of Dermatology 1, 4

If pruritus with skin breakdown does not respond to initial therapy, obtain a complete blood count with differential to evaluate for hematologic malignancy, a comprehensive metabolic panel to assess for renal or hepatic disease, thyroid-stimulating hormone to rule out thyroid dysfunction, and iron studies to identify iron deficiency or overload, according to Praxis Medical Insights 2

The British Journal of Dermatology advises against using sedating antihistamines long-term, especially in elderly patients, due to dementia risk and limited efficacy for chronic pruritus 4, 2
Do not delay dermatology referral if symptoms worsen, fail to improve after 4-6 weeks, or if diagnostic uncertainty exists, as recommended by the Journal of Clinical Oncology, the British Journal of Dermatology, and Praxis Medical Insights 1, 4, 2