A rare disorder known as perineal scar endometriosis develops when endometrial tissue is discovered outside of it. This tissue is located in the perineal region, which is the space between the external genitalia and the anus, in cases of perineal scar endometriosis. The quality of life for a woman can be greatly impacted by this ailment, which can be extremely painful. Since perineal scar endometriosis can resemble other perineal masses like abscesses or hematomas, its diagnosis might be difficult. When women appear with perineal masses, especially those who have had previous pelvic procedures, healthcare providers should be highly suspicious of endometriosis. For those who have perineal scar endometriosis, early detection and treatment can help reduce symptoms and enhance quality of life. The successful identification and treatment of endometriosis in this patient is a testament to the collaborative efforts of the healthcare team involved. Delaying diagnosis or confusing them with other diagnoses like perineal abscess, like in our case, can lead to increased morbidity resulting from anal or rectal involvement, recurrence, malignant transformation, and other complications of this condition, and it is very important to identify the margin by doing an MRI to assess the exact location.