Efficacy and Safety of Ultrasound-Guided Pharmacopuncture as an Adjunctive Therapy in Inpatients With Post-Traffic Accident Tension-Type Headache

Inclusion Criteria: * Patients hospitalized for the treatment of traffic accidents with tension-type headache originating from a traffic accident within 14 days of onset. * Patients with a headache NRS (Numeric Rating Scale) score of 5 or higher. * Patients diagnosed with tension-type headache according to the International Classification of Headache Disorders, 3rd edition (ICHD-3) criteria: * Headache exhibiting at least two of the following characteristics: * Bilateral location * Pressing or tightening (non-pulsating) quality * Mild or moderate intensity * Not aggravated by routine physical activity such as walking or climbing stairs * Fulfilling both of the following conditions: * No nausea or vomiting * No more than one of photophobia or phonophobia * Patients aged between 19 and 69 years old (aged 19 to less than 70 years). * Participants who voluntarily decide to participate, fully understand the details of the clinical study, agree to follow precautions, and provide written informed consent. Exclusion Criteria: * Patients diagnosed with specific serious medical conditions requiring surgical management rather than conservative treatment (e.g., acute fracture, dislocation, complete ligament rupture, etc.). * Cases where the cause of pain originates from conditions other than tension-type headache (e.g., intracerebral hemorrhage, cerebral infarction, hypertension, ocular diseases, drug-induced headache, etc.). * Cases where surgical intervention is required due to suspected acute cervical spine fracture, herniated cervical disc, or spinal ligament injury. * Patients diagnosed with primary headache disorders other than tension-type headache, such as migraine or cluster headache. * Patients with other acute diseases (e.g., stroke, myocardial infarction, kidney disease, diabetic neuropathy, dementia, epilepsy, etc.) that may interfere with the treatment effect or interpretation of study results. * Patients currently taking steroids, immunosuppressants, psychiatric medications, or other drugs that may affect the study findings. * Cases where pharmacopuncture treatment is inadequate or unsafe: patients with hemorrhagic diseases, those receiving anticoagulant therapy, or severe diabetic patients with a risk of infection. * Patients who have taken medications that may affect pain, such as Non-Steroidal Anti-Inflammatory Drugs (NSAIDs), or have received pharmacopuncture or physical therapy within the past 1 week. * Pregnant women, women who are planning to become pregnant, or nursing mothers. * Patients within 3 months following head or neck-related surgery. * Patients who finished participating in another clinical study less than 1 month prior, or who plan to participate in another clinical study during the study and follow-up period within 6 months from the date of selection. * Cases where it is difficult to obtain written informed consent for participation. * Other cases where the investigator deems the candidate unsuitable for participation in the clinical study.