PMID- 32891774 OWN - NLM STAT- MEDLINE DCOM- 20210531 LR - 20210531 IS - 1097-6787 (Electronic) IS - 0190-9622 (Linking) VI - 84 IP - 1 DP - 2021 Jan TI - Substance use disorders and chronic itch. PG - 148-155 LID - S0190-9622(20)32545-7 [pii] LID - 10.1016/j.jaad.2020.08.117 [doi] AB - Chronic pruritus is one dermatologic manifestation of an underlying substance use disorder. Recent literature has uncovered similarities between the general neurologic mechanisms of addiction and chronic itch, largely involving activation of the dopaminergic reward circuits within the brain and imbalances between mu and kappa opioid receptor activation. It is likely that the use of specific drugs, like central nervous system stimulants and opioids, results in further activation and imbalances within these pathways, perpetuating both addiction and pruritus simultaneously. Opioid users often present to dermatology clinics with a generalized pruritus, whereas individuals using central nervous system stimulants like cocaine and methylenedioxymethamphetamine (MDMA), as well as legally prescribed drugs like treatments for attention deficit hyperactivity disorder, frequently complain of crawling, delusional infestation-like sensations underneath the skin. Because of these overlapping mechanisms and similar clinical presentations to many other chronically itchy conditions, it is necessary for dermatologists to consider and investigate an underlying substance use disorder to effectively treat these patients. CI - Copyright (c) 2020 American Academy of Dermatology, Inc. Published by Elsevier Inc. All rights reserved. FAU - Lipman, Zoe M AU - Lipman ZM AD - Dr Phillip Frost Department of Dermatology and Miami Itch Center, University of Miami, Miami, Florida. FAU - Yosipovitch, Gil AU - Yosipovitch G AD - Dr Phillip Frost Department of Dermatology and Miami Itch Center, University of Miami, Miami, Florida. Electronic address: yosipog@gmail.com. LA - eng PT - Journal Article PT - Review DEP - 20200903 PL - United States TA - J Am Acad Dermatol JT - Journal of the American Academy of Dermatology JID - 7907132 SB - IM MH - Amphetamine-Related Disorders/*complications/physiopathology MH - Chronic Disease MH - Cocaine-Related Disorders/*complications/physiopathology MH - Humans MH - Neural Pathways MH - Opioid-Related Disorders/*complications/physiopathology MH - Pruritus/*chemically induced/physiopathology OTO - NOTNLM OT - CNS stimulants OT - addiction OT - amphetamines OT - cocaine OT - delusions of infestation OT - itch OT - opioids OT - pruritus OT - substance use EDAT- 2020/09/07 06:00 MHDA- 2021/06/01 06:00 CRDT- 2020/09/06 20:25 PHST- 2020/07/07 00:00 [received] PHST- 2020/08/26 00:00 [revised] PHST- 2020/08/30 00:00 [accepted] PHST- 2020/09/07 06:00 [pubmed] PHST- 2021/06/01 06:00 [medline] PHST- 2020/09/06 20:25 [entrez] AID - S0190-9622(20)32545-7 [pii] AID - 10.1016/j.jaad.2020.08.117 [doi] PST - ppublish SO - J Am Acad Dermatol. 2021 Jan;84(1):148-155. doi: 10.1016/j.jaad.2020.08.117. Epub 2020 Sep 3.