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Cashew Nut Dermatitis: An Example of Internal-External Contact-Type Hypersensitivity

Cashew Nut Dermatitis: An Example of Internal-External Contact-Type Hypersensitivity Abstract Five patients who were exquisitely sensitive to Rhus antigen developed a generalized eczematous dermatitis after eating large amounts of "raw" cashew nuts. Three of four tested had positive patch test reactions to raw cashews and negative reactions to roasted cashews. A group of highly "Rhus-positive" healthy adult volunteers had positive patch test reactions to raw cashews, while "Rhus-negative" and slightly Rhus-positive volunteers had no reaction to raw cashews. No dermatitis could be produced by feeding large amounts of raw cashew nuts to two Rhus-negative volunteers. The raw cashew nuts sold in organic food stores contain appreciable amounts of cashew nut shell oil on their surfaces. The oil is antigenically similar to Rhus oleoresin and causes a generalized eruption when ingested in large quantities by people highly sensitive to Rhus antigen. References 1. Wilkinson DS, et al: Terminology of contact dermatitis . Acta Derm Venereol 50:287-292, 1970. 2. Fisher AA: Contact Dermatitis , ed 2. Philadelphia, Lea & Febiger, 1973, pp 260-262, 293-305. 3. Harvay MT, Caplan S: Cashew nut shell liquid . Indust Engin Chem 32:1306, 1940.Crossref 4. Kligman AM: Cashew shell oil for hyposensitization against Rhus dermatitis . Arch Dermatol 78:359-363, 1958.Crossref 5. Cashew nut , Encyclopedia Britannica , vol 4, pp 962-963, 1958. 6. Ohler JG: Cashew nut processing . Trop Abst 21( (suppl 9) ):1972-2007, 1966. 7. Orris L: Cashew nut dermatitis . N Y J Med 58:2799-2800, 1958. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Archives of Dermatology American Medical Association

Cashew Nut Dermatitis: An Example of Internal-External Contact-Type Hypersensitivity

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References (8)

Publisher
American Medical Association
Copyright
Copyright © 1974 American Medical Association. All Rights Reserved.
ISSN
0003-987X
eISSN
1538-3652
DOI
10.1001/archderm.1974.01630120067016
Publisher site
See Article on Publisher Site

Abstract

Abstract Five patients who were exquisitely sensitive to Rhus antigen developed a generalized eczematous dermatitis after eating large amounts of "raw" cashew nuts. Three of four tested had positive patch test reactions to raw cashews and negative reactions to roasted cashews. A group of highly "Rhus-positive" healthy adult volunteers had positive patch test reactions to raw cashews, while "Rhus-negative" and slightly Rhus-positive volunteers had no reaction to raw cashews. No dermatitis could be produced by feeding large amounts of raw cashew nuts to two Rhus-negative volunteers. The raw cashew nuts sold in organic food stores contain appreciable amounts of cashew nut shell oil on their surfaces. The oil is antigenically similar to Rhus oleoresin and causes a generalized eruption when ingested in large quantities by people highly sensitive to Rhus antigen. References 1. Wilkinson DS, et al: Terminology of contact dermatitis . Acta Derm Venereol 50:287-292, 1970. 2. Fisher AA: Contact Dermatitis , ed 2. Philadelphia, Lea & Febiger, 1973, pp 260-262, 293-305. 3. Harvay MT, Caplan S: Cashew nut shell liquid . Indust Engin Chem 32:1306, 1940.Crossref 4. Kligman AM: Cashew shell oil for hyposensitization against Rhus dermatitis . Arch Dermatol 78:359-363, 1958.Crossref 5. Cashew nut , Encyclopedia Britannica , vol 4, pp 962-963, 1958. 6. Ohler JG: Cashew nut processing . Trop Abst 21( (suppl 9) ):1972-2007, 1966. 7. Orris L: Cashew nut dermatitis . N Y J Med 58:2799-2800, 1958.

Journal

Archives of Dermatology – American Medical Association

Published: Dec 1, 1974

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