[Bacterial Meningitis and Suppurative Thrombophlebitis after Trigger Point Injections: A Case Report].

A 73-year-old woman with untreated diabetes mellitus visited our emergency department with a 4-day history of progressive headache, fever, and chills. She received trigger point injections (TPI) into the right sternocleidomastoid for exercise-induced ipsilateral shoulder pain, 13 days before admission and into the right trapezius, 6 days before admission. Cerebrospinal fluid (CSF) evaluation revealed pleocytosis with a predominance of neutrophils, as well as elevated protein and reduced glucose levels. Magnetic resonance imaging of the cervical spine revealed inflammatory changes of the right-sided posterior cervical muscles and the right vertebral arch of the C5-C6 vertebrae without contrast enhancement of the right posterior cervical veins. She was diagnosed with bacterial meningitis and suppurative thrombophlebitis, and empiric broad-spectrum antibiotic therapy was administered intravenously. The initial blood culture yielded Streptococcus intermedius; however, CSF culture showed no growth. She recovered completely after a 4-week course of intravenously administered ampicillin and was discharged with oral clindamycin to complete a total 6-week antibiotic course. TPI are widely used as a safe therapeutic strategy associated with few complications, and serious infections are rare. However, clinicians must remain mindful of the possibility of these complications in immunocompromised patients, such as those with diabetes mellitus who undergo TPI. (Received September 18, 2020; Accepted December 21, 2020; Published June 1, 2021).