Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) hereditary sensory and autonomic neuropathy type II ?
    ### Response:
    Hereditary sensory and autonomic neuropathy type II (HSAN2) is a condition that primarily affects the sensory nerve cells (sensory neurons), which transmit information about sensations such as pain, temperature, and touch. These sensations are impaired in people with HSAN2.
    