The Unani terminology for Pelvic Inflammatory Disease is “Marz- e-Warm-e-Aana”. Although there is no description of ‘Marz-e-Warm-e-Aana’ (pelvic inflammatory disease) as such in classical; but this term has been literally translated by the contemporary physicians in an attempt to explain the disease texts entity applicable to present day etymology. ‘Warm-e-Reham’ (inflammation of uterus) has been described in classical books. After the study of the description of warm-e-reham by different scholars, it was found that Unani physicians have described the inflammation of cervix, uterus, fallopian tubes and ovaries collectively with the name of warm-e-reham. Moreover, the causes, clinical features and pathology of warm-e-reham described by unani scholars seems to be similar to that of pelvic inflammatory disease which is described in modern medicine. Thus, we can say that warm-e-reham described in unani texts, corresponds to the description of marz-e-warm-e-aana (pelvic inflammatory disease). This paper presents a review of Unani literature with reference to Pelvic inflammatory Disease.