Last reviewed: 8 Feb 2021
Last updated: 04 Mar 2020
Summary
Definition
History and exam
Key diagnostic factors
- adolescent and young adult age
- history of living in area of high temperature and humidity
- susceptible skin characteristics
- positive drug history
- lack of pruritus or pain
- dyspigmentation
- macules or patches
- seborrheic distribution
- fine overlying scale
Risk factors
- high ambient temperature and humidity
- adolescent and young adult age
- hyperhidrosis
- systemic corticosteroid or other immunosuppressant use
- participation in athletics
- greasy skin
- family history of PV
- malnutrition
- use of oral contraceptives
- HIV infection and other immunosuppressive conditions
- use of occlusive ointments or creams
Diagnostic investigations
Treatment algorithm
Contributors
Authors

Clinical Professor
Departments of Dermatology and Pathology
University of Iowa
Iowa City
IA
Disclosures
BLS declares that he has no competing interests.
Peer reviewers
Private Practice of Dermatology
Coralville
IA
Disclosures
HW declares that he has no competing interests.
Consultant Paediatrician
Heartlands Hospital
Birmingham
UK
Disclosures
HG declares that she has no competing interests.
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