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Dr. Warren Chapin, played by Vincent Price, is a character in the 1959 film The Tingler.

Dr. Chapin is a pathologist who has discovered that the tingling of the spine in states of extreme fear is due to the growth of a creature that every human being seems to have, called a "tingler", a parasite attached to the human spine. It curls up, feeds and grows stronger when its host is afraid, effectively crushing the person's spine if curled up long enough. The host can weaken the creature and stop its curling by screaming.

After an acquaintance's wife dies of fright, being a deaf-mute, she could not scream. Chapin removes the tingler from her spine and it gets loose.