Definition of Pseudomelanosis coli

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Pseudomelanosis coli: A benign, reversible condition usually, but not always, associated with long-term use of anthranoid laxatives in which pigment deposition in the lamina propria of the large intestine results in a brown to black discoloration of the mucosa (lining) of the large intestine. Melanosis coli produces no symptoms and is indicative of chronic senna laxative use.

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