Causes of paralysis of the tail finger may be cervical spondylosis, diabetes, and nerve endings inflammation. The tail finger generally refers to the little finger. 1. Cervical spondylosis: Patients with cervical spondylosis may suffer from herniated cervical discs, which can narrow the spinal canal, leading to compression of the cervical nerves and paralysis of the tail finger. 2. Diabetes mellitus: Diabetes mellitus patients may have paralysis of the tail finger, because diabetes mellitus patients may have some complications, tail finger paralysis belongs to one of them. 3. Nerve Endings Inflammation: Long-term vitamin B deficiency and malnutrition may lead to nerve endings inflammation, and the common symptom is paralysis of the tail finger. If the patient has tail finger paralysis, it is necessary to consult a doctor in time, to clarify the cause of the disease, and actively cooperate with the doctor’s diagnosis and treatment, under the guidance of the doctor to choose the appropriate treatment method, so that early detection and early treatment.