docLogica

Medical Diagnosis for the 21st Century

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Disease Symptom Database

Hundreds of diseases (986 and counting) with common and rare symptoms listed in a simple point form format.

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Differential Diagnosis Maker

Intelligently make a differential diagnosis by adding symptoms and/or disease processes.

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Disease Prevalences

Find disease probabilities for common presenting complaints straight from the medical literature.

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Test Accuracies

Calculate how testing changes disease probabilities with 1,127 diagnostic likelihood ratios. Also view the chance of harm from many of these tests.

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