For most people with pseudocholinesterase deficiency, no signs or symptoms of the condition occur until you get the muscle relaxant succinylcholine. This medication is used as part of anesthesia. Signs and symptoms of pseudocholinesterase deficiency include muscle relaxation or muscle paralysis that lasts several hours longer than expected. During that time, you can't move or breathe on your own. The length of time may vary widely among people with this disorder.