Epiglottis
Epiglottis: The flap that covers the trachea during swallowing, so that food does not enter the lungs.
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- Epilation
Epilation: Removal of body hair, including the hair root, by means of electrical device, tweezers, or wax. Epilation may be performed by a dermatologist, but is more commonly done for cosmetic purposes by a facial technologist or esthetician. After epilation, the skin may be particularly sensitive. Also known as depilation.
- Epilepsy
Epilepsy (seizure disorder): When nerve cells in the brain fire electrical impulses at a rate of up to four times higher than normal, this causes a sort of electrical storm in the brain, known as a seizure. A pattern of repeated seizures is referred to as epilepsy. Known causes include head injuries, brain tumors, lead […]
- Epilepsy, Jacksonian
Epilepsy, Jacksonian:A brief alteration in movement, sensation or nerve function caused by abnormal electrical activity in a localized area of the brain. Seizures of this type typically cause no change in awareness or alertness. They are transient, fleeting, ephemeral. Jacksonian seizures are extremely varied and may involve, for example, apparently purposeful movements such as turning […]
- Epilepsy, grand mal
Epilepsy, grand mal: Epilepsy that includes tonic-clonic (grand mal) seizures, which are the most obvious type of seizure. There are two parts to a tonic-clonic seizure. In the tonic phase, the body becomes rigid, and in the clonic phase, there is uncontrolled jerking. A tonic-clonic seizure may or may not be preceded by an aura, […]
- Epilepsy, juvenile myoclonic
Epilepsy, juvenile myoclonic: A form of epilepsy that occurs in young people, most commonly in the teenage years. It is characterized by jerking (myoclonic) movements of the arms and upper torso, without loss of consciousness. Seizures are most likely to occur when a person is awakening from sleep. Many children with this disorder are sensitive […]