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Ictal (Ictus) -  A seizure or during a seizure.
Idiopathic -  Disease of unknown cause.
IEP -  see individual education plan
ILAE -  The International League Against Epilepsy (ILAE) is the world’s preeminent association of physicians and other health professionals working toward a world where no person’s life is limited by epilepsy.
Impaired -  the state of being diminished, weakened, or damaged, especially mentally or physically
independence -  Freedom from the control of others. To make your own decisions. To carry out tasks without assistance.
Individual Education Plan (IEP) -  is a plan or programme designed for children with additional educational needs to help them to get the most out of their schooling. An IEP builds on the curriculum and sets out the strategies being used to meet that child’s specific needs.
Infantile Spasms (West Syndrome) -  Brief muscle spasms seen in infants characterised by head nodding or sudden bending forward. The seizures are brief and may be missed. They typically begin during the first 2 years of life, with a peak onset between 4 and 6 months of age. They are associated with developmental delay.
inhibit -  To hold back, control or prevent (seizures)
insomnia -  Chronic inability to fall asleep or remain asleep for a sufficient length of time.
Intellectual disability -  Refers to limitations in intellectual functioning such as difficulties in learning and performing daily life skills. It is evident before the age of 18 years and IQ is below 70.
Intellectual impairment -  see intellectual disability.
Interaction -  In pharmacology – The effect of two or more drugs acting on each other.
Interictal -  The periods between seizures.
intractable -  Difficult to alleviate, resolve or cure. With epilepsy, intractable seizures are difficult to control with the usual antiepileptic drug therapy.
Intractable Seizures -  Epilepsy not controlled despite adequate medication.
Isolated Seizures -  A single seizure, nearly always a tonic-clonic seizure, with no risk factors for epilepsy and a normal neurological examination. Does no warrant long term treatment.