disorder of the arithmetical faculty (the affected person is unable to do simple sums in addition or multiplication) in the early stages of organic brain disease.
Joffroy signNeurology A loss of arithmetic skills as an early indicator of organic brain disease
Joffroy,Alexis, French physician, 1844-1908.
Joffroy reflex - twitching of the gluteal muscles when firm pressure is made on the buttocks, in cases of spastic paralysis. Synonym(s): hip phenomenon
Joffroy sign - immobility of the facial muscles when the eyeballs are rolled upward, in exophthalmic goiter; disorder of the arithmetical faculty in the early stages of organic brain disease.