Sustained Release Liposomal Pharmaceutical Embolizing Agents for Treating Chronic Subdural Hematoma, Intractable Migraines, Headaches, and Other Pain Conditions

A method of treating pain in a patient, the method comprising:

• forming a vascular access into the patient;
• advancing a catheter through the patient's vasculature to a target artery supplying blood to a pain-associated anatomical region;
• and
• administering through the catheter a pharmaceutical embolizing agent to a location in said target artery, wherein the pharmaceutical embolizing agent comprises an injectable biocompatible medical gel and a sustained-release analgesic incorporated within the medical gel, wherein the pharmaceutical embolizing agent is adapted to (i) form an embolus at said location, (ii) release a therapeutic drug at said location over time, and (iii) be structurally stabilized at the location to retain the analgesic without migration within the target artery and release the analgesic over an extended period to reduce pain experienced by the patient.