Seizure, atonic
A seizure in which the person suddenly loses muscle tone and cannot sit or stand upright. Also known as drop attack and drop seizure.
Read Also:
- Seizure, febrile
A convulsion that occurs in association with a fever. Febrile seizures are common in infants and young children and are usually of no lasting importance.
- Seizure, Jacksonian
A form of seizure that involves brief alterations in movement, sensation, or nerve function that is caused by abnormal electrical activity in a localized area of the brain. Jacksonian seizures typically cause no change in awareness or alertness. They are transient, fleeting, and ephemeral.
- Seizure, myoclonic
A seizure that is characterized by jerking (myoclonic) movements of a muscle or muscle group, without loss of consciousness.
- Selective Estrogen-Receptor Modulator (SERM)
A “designer estrogen” which possesses some, but not all, of the actions of estrogen. For example, raloxifene (trade name EVISTA) is classified as a SERM because it prevents bone loss (like estrogen) and lowers serum cholesterol (like estrogen) but (unlike estrogen) does not stimulate the endometrial lining of the uterus.
- selective mutism
An inability to speak in certain situations. See also apraxia, autism, mutism.