Neurinoma usually refers to nerve sheath tumor located in cranial brain, limbs, clavicle, shoulder and neck, etc. In early stage, patients may have slight sensory disorder, and the area where the tumor is located may also have slight pain and numbness. 1. Cranial nerves: nerve sheath tumor is mostly located in cranial nerves, and in the early stage, it often appears as round or oval movable mass, which has clear boundary and no adhesion with surrounding tissues, and may be accompanied by pain and pressure pain. 2. Peripheral nerves: nerve sheath tumor can also be located in the peripheral nerves of limbs, clavicle, shoulder and neck, etc. Early stage, patients may have symptoms such as sensory dysfunction, local pain and local numbness. If the patients have the above symptoms, they need to go to the local hospital as soon as possible for consultation, clear diagnosis and early treatment.