pemphigus

/ˈpɛmfɪɡəs/
noun
  1. A serious skin disease in which large blisters form on the skin and inside the mouth.
    • She learned about pemphigus in her medical textbook during dermatology class.
    • Pemphigus can be treated with medications that help control the immune system.
    • The doctor diagnosed the patient with pemphigus after seeing the blisters on his skin.