Numbness on the outside of the palm of the right foot may be caused by peripheral neuritis, lumbar intervertebral disc herniation, ankle joint lesion and other reasons. 1. Peripheral neuritis: Diabetes, neurotrophic deficiencies and other factors lead to peripheral nerve damage, triggering peripheral neuritis, which may lead to numbness on the outside of the right foot. 2. Herniated lumbar disc: Herniated lumbar disc compresses the nerve root and affects the innervated area, which may cause numbness on the outside of the right foot. 3. Ankle joint lesions: ankle arthritis, soft tissue lesions around the ankle joint and other ankle joint lesions, may lead to nerve compression, appearing right lateral paresthesia. The situation of numbness of the lateral side of the palm of the right foot, it is recommended that the patient consult the doctor in a timely manner, under the guidance of the doctor to clarify the diagnosis and treatment. Daily attention to avoid overwork, often stay up late, appropriate outdoor exercise.