Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Cicatricial pemphigoid ?
    ### Response:
    Cicatricial pemphigoid is a rare, chronic, blistering and scarring disease that affects the oral and ocular mucosa. Other mucosal sites that might be affected include the nasopharnyx, larynx, genitalia, rectum, and esophagus. The condition usually begins in late adulthood (e.
    