Iliopsoas Abscess Leading to Chronic Ilioinguinal Neuralgia: A Case Report and Discussion.

Background: Psoas abscesses are infrequent yet significant conditions characterized by the localized accumulation of purulent material within the psoas muscle compartment, often resulting in debilitating pain localized to the hip, low back, or groin. Clinical symptoms typically include pain, fever, and potential progression to septic shock. Standard treatment generally involves a combination of antibiotics and drainage procedures.

Case report: This case presents a 75-year-old man with a history of chronic low back pain, who sought treatment for right groin discomfort at a pain clinic. The patient had previously undergone interventional radiology drainage of an iliopsoas abscess 2 years earlier. Despite successful abscess resolution, he developed chronic ilioinguinal neuralgia. Ultrasound-guided ilioinguinal nerve block resulted in a notable 70% reduction in pain, suggesting efficacy in managing similar cases.

Conclusions: This case highlights that ultrasound-guided nerve blocks may be efficacious in treating chronic pain due to abscesses or ilioinguinal neuralgia.