The causes of forefoot numbness in patients are as follows: 1. Ankle canal syndrome: Due to the compression of the cervical nerve at the ankle canal by the ankle support band, it causes abnormal skin sensation in the area innervated by the cervical nerve. The cervical nerve in the plantar can be divided into the lateral plantar nerve and the medial plantar nerve, so it often manifests as abnormal sensation in the forefoot, which can manifest as local skin numbness or pain and allergy. 2, lumbar disc herniation: it can cause sciatic nerve pain and numbness, the disc tissue compresses the spinal nerve, there will be radiating pain in the lower limbs, and the pain can go all the way to the foot, while it can be accompanied by Numbness in the toes, dorsum and soles of the feet. 3, peripheral neuritis: for example, numbness in the hands and feet often occurs in diabetic patients.