A method of neurohydrodissection for treating a headache in a patient is disclosed. The method comprises the step of physically inspecting a patient and locating a first compression site of a nerve of the patient where the nerve passes through a tissue and is inflamed. The method comprises the step of ultrasound imaging the patient at the first compression site. The method comprises the step of inserting a syringe at the first compression site, wherein while the first compression site is being imaged, guiding the syringe to an intersection between the nerve and the tissue, injecting a solution with the syringe at the intersection and dissecting the nerve from the tissue. The method comprises the step of confirming with the patient whether a headache symptom has changed.