Approach to the Patient with Chronic Pruritus

Med Clin North Am. 2021 Jul;105(4):699-721. doi: 10.1016/j.mcna.2021.04.007.

Abstract

Chronic pruritus (itch lasting ≥6 weeks) is a bothersome chief complaint that may present in a broad variety of diseases. Most itch-causing diagnoses fit into 1 of 5 categories (inflammatory, secondary to systemic disease, neuropathic, chronic pruritus of undetermined origin, and psychogenic itch) and this broad differential can be narrowed using key findings in the history and physical. In this article, we discuss which key findings are most pertinent for narrowing this differential and guiding further workup and treatment, as well as how to treat many itchy conditions.

Keywords: Chronic pruritus; Generalized pruritus; Inflammatory itch; Itch; Localized pruritus; Neuropathic itch.

Publication types

  • Review

MeSH terms

  • Administration, Topical
  • Adrenal Cortex Hormones / administration & dosage
  • Adrenal Cortex Hormones / therapeutic use
  • Algorithms
  • Analgesics, Opioid / administration & dosage
  • Analgesics, Opioid / therapeutic use
  • Antidepressive Agents / administration & dosage
  • Antidepressive Agents / therapeutic use
  • Calcineurin Inhibitors / administration & dosage
  • Calcineurin Inhibitors / therapeutic use
  • Chronic Disease
  • Counseling / methods
  • Detergents / administration & dosage
  • Detergents / therapeutic use
  • Diagnosis, Differential
  • Emollients / administration & dosage
  • Emollients / therapeutic use
  • Histamine Antagonists / administration & dosage
  • Histamine Antagonists / therapeutic use
  • Humans
  • Immunosuppressive Agents / administration & dosage
  • Immunosuppressive Agents / therapeutic use
  • Inflammation / complications*
  • Male
  • Neurotransmitter Agents / administration & dosage
  • Neurotransmitter Agents / therapeutic use
  • Nutritional Support / methods
  • Peripheral Nervous System Diseases / complications*
  • Pruritus / diagnosis*
  • Pruritus / drug therapy
  • Pruritus / etiology*
  • Relaxation Therapy / methods
  • Skin Diseases / pathology*

Substances

  • Adrenal Cortex Hormones
  • Analgesics, Opioid
  • Antidepressive Agents
  • Calcineurin Inhibitors
  • Detergents
  • Emollients
  • Histamine Antagonists
  • Immunosuppressive Agents
  • Neurotransmitter Agents