MACDONALD CRITCHLEY, F.R.C.P. (Lond.), F.A.C.P. (Hon.)
The condition spoken of as "congenital indifference to pain" is a rarity often discovered by chance. In the case of a child, the parents may eventually realize that a long series of injuries and illnesses has occasioned none of the suffering which would ordinarily have been expected. The subjects of congenital indifference to pain—who are in no way mentally retarded, hysterical or psychotic—present no objective anomaly of sensation. They can detect, identify and localize pinpricks, and can distinguish quite minor differences in thermal contacts. Sometimes the subject is also insensitive as to smell and taste. Furthermore, itching often lies outside
CRITCHLEY M. CONGENITAL INDIFFERENCE TO PAIN1. Ann Intern Med. ;45:737–747. doi: 10.7326/0003-4819-45-5-737
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Published: Ann Intern Med. 1956;45(5):737-747.
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