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J Am Acad Dermatol. 2001 Dec;45(6):892-6.

Pruritus of unknown origin: a retrospective study.

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  • 1Department of Dermatology, University of Pittsburgh Medical Center, Pennsylvania, USA.

Abstract

BACKGROUND:

Pruritus of unknown origin is a common complaint, and systemic causes must be considered. However, there is little data on how frequently systemic causes are responsible or whether any patient characteristics make a systemic cause more likely.

OBJECTIVE:

We attempted to determine how frequently pruritus of unknown origin had a systemic etiology in an outpatient population seen in a university dermatology department and whether any patient characteristics made a systemic explanation more likely.

METHODS:

This is a retrospective study using chart reviews and telephone interviews to collect data.

RESULTS:

Of 50 patients, 11 had a systemic cause of pruritus. Pruritus was the initial symptom of systemic disease in 7 of these patients. No patient characteristics were statistically associated with systemic causes of pruritus.

CONCLUSION:

Pruritus of unknown origin was the initial symptom of a systemic disease in 7 of 50 patients presenting to a dermatology clinic with this complaint. The underlying diseases included hypothyroidism, gastric adenocarcinoma, hepatitis C, HIV, laryngeal carcinoma, graft-versus-host disease, and chronic lymphocytic leukemia.

[PubMed - indexed for MEDLINE]
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