What are the preoperative preparations for trigeminal neuralgia? The cause of trigeminal neuralgia is actually in the cranial brain, where the neurovascular produces riding across, and the blood vessels constantly compress the nerves causing pain, which must be solved by surgery. In order to minimize surgical trauma, it is recommended to choose microvascular decompression. Many patients have taken many detours in the process of treatment and have tried various treatments, all of which feel very ineffective. It should be reminded that surgery is currently curable, and trigeminal neuralgia should not be treated blindly after diagnosis to avoid leading to complications. The surgery for trigeminal neuralgia is microvascular decompression (MVD) So, what evaluation should be done before surgery? Imaging evaluation: Significance of imaging evaluation: Before MVD treatment, accurate imaging evaluation is important to exclude secondary lesions, screening of patients for surgery, identification of responsible vessels during surgery, and prediction of the difficulty of surgery.MRI has a high spatial resolution and can clearly show the vessels and the relationship between facial nerve and trigeminal nerve. It can better diagnose which patients are more suitable for apparent microvascular decompression surgery. The primary diagnosis is clear, and secondary lesions are excluded by cranial CT or MRI. The symptoms are severe, affecting daily life and work, and the patient has a strong desire for surgery. Patients who apply medication or conservative treatment should be operated aggressively in case of poor efficacy, ineffectiveness, drug allergy or toxic side effects. Patients with recurrence after MVD surgery can be operated again. Patients who are ineffective after MVD surgery, if the first surgical decompression is considered insufficient, and patients who are followed up with no trend of symptom relief or even gradual aggravation can also be considered for reoperation. Surgery has been practiced in the clinic for many years and is the best treatment for trigeminal neuralgia. Surgery is the best way to treat trigeminal neuralgia. The root cause of trigeminal neuralgia is solved by surgically separating the nerve from the blood vessel, and when the blood vessel is no longer pressing on the nerve, the problem is solved. The surgical treatment of trigeminal neuralgia, also called “microvascular decompression”, is the most effective surgical treatment in clinical practice. Most patients experience immediate pain relief after the procedure and do not have to worry about a long recovery time.