Diabetic Peripheral Neuropathic Pain (DPNP)

The goal of this clinical trial is to learn if YJ001 Spray works to treat diabetic patients with Diabetic Peripheral Neuropathic Pain..It will also learn about the safety of drug YJ001 Spray.This trial is divided into two parts. The first part of the trial is designed as a randomized, double-blind, double-dummy, parallel-controlled, multi-center clinical trial with positive reference product and placebo; the second part is designed as a single-arm, open-label, multi-center clinical trial.In the first part, the trial was divided into the test group, the positive control group, and the placebo group. In the first part,The experimental group received YJ001 spray + clobazam besylate capsule placebo, the positive control group received YJ001 spray placebo + clobazam besylate capsule, and the placebo group received YJ001 spray placebo + clobazam besylate capsule placebo. In the second part, all participants were treated with the investigational product, and 30 trial participants underwent PK blood sample collection according to the protocol. Part I of the trial : To evaluate the efficacy and safety of YJ001 spray in treating diabetic peripheral neuropathic pain. Part 2 of the trial: Evaluate the long-term efficacy and the pharmacokinetic characteristics of YJ001 spray in treating dia betic peripheral neuropathic pain at the clinically recommended dosage. Participants will: Apply spray topically to both feet twice daily, with six sprays per foot at each administration. Visit the clinic once every 1 or 2 or 4 weeks for checkups and tests Complete a study diary daily to record pain intensity, sleep interference, study-drug administration, and spray-related respiratory irritation.

The goal of this clinical trial is to learn if drug Mirogabalin works to treat diabetic peripheral neuropathic pain in adults. It will also learn about the safety of the drug Mirogabalin. The main questions it aims to answer are: Does drug mirogabalin reduce neuropathic pain intensity? Is the drug mirogabalin safe in patients with diabetes suffering from neuropathic pain? Does drug mirogabalin improve patients' quality of life (QoL) ( physical, mental, and social well-being)? Researchers will compare drug mirogabalin to drug pregabalin (a drug conventionally used to treat diabetic neuropathic pain) to see if drug mirogabalin works to treat, safe and improve quality of life (QoL) in diabetic neuropathic pain. Participants will: Take drug Mirogabalin or pregabalin every day for 8 weeks Visit the clinic at 1, 2, 4, 6, 8 weeks for checkups