Leg tic: Phobia against crabs.
Case 442. (Duprat, October, 1917.)
A man, shell-shocked in 1916 (with loss of consciousness, disorientation and confusion followed by nightmares, memory disorder, attention disorder, irritability, mental instability and over-emotionalism) later still showed a choreiform tic. He had a knife-grinding movement of the left leg which made standing and walking difficult. There were no signs in the reflexes or reactions of organic disease. The man himself said that he felt a sensation like little electric shocks when his foot touched the ground, a sensation like pinching. He also had certain hysteriform crises. He was able to remember nightmares in which he felt as if he had fallen into a hole where there were crabs. In point of fact, he had a true phobia against crabs, crayfish, lobsters and the like; if he saw one, he always felt as if he were going to have a new crisis. The defense movement of the leg and foot was against a supposed pinch of the crab. At rest, there was no trace of the choreiform movement. The tic was especially marked when the man was suddenly asked to get up and walk. In a few days, when he had become more clearly conscious of his phobia and had slept better, the tic grew appreciably less.