<unk>  is a patient's sensation that the face is covered with a mask or a gauzy network like cobwebs. This medical sign is associated with tabes dorsalis affecting the trigeminal nerve (fifth cranial nerve CN V). It is named in honour of the English physician Sir Jonathan<unk>  (1828–1913).
Hutchinson's mask
Bag valve mask
Schimmelbusch mask
Pocket mask
Surgical mask
Keidel vacuum
Broselow tape
LUCAS device