Biomedical subjects

A D Yalçin

Publications and source records attributed to A D Yalçin.

4 recordsLinked to original sources

PubMed2000

Reflex occipital lobe epilepsy.

Photosensitivity is a typical feature of photosensitive epilepsy which is usually considered a form of idiopathic generalized epilepsy. Partial seizures featuring visual symptoms are rarely reported in photosensitive epilepsy. In this study, we describe 13 neurologically normal patients in whom daytime seizures were always induced by television and began with elementary visual hallucinations, followed frequently by vomiting, headache and then secondary generalization. Three patients additionally reported nocturnal seizures, which have not been described in previous studies. Two of these latter patients had generalized tonic-clonic seizures, the other always awoke from sleep and could describe typical visual hallucinations at the beginning of the seizure. EEG features included normal background activity and occipital spikes or spike-waves in all but two patients. Eight patients also showed generalized epileptiform activity during intermittent photic stimulation. Seizure frequency was low in all. Apart from two patients, who refused treatment, all patients received antiepileptic drugs. Only one patient continued to have rare seizures after treatment; in the others seizure control was achieved with monotherapy. We conclude that reflex occipital lobe epilepsy is an idiopathic form of the benign partial epilepsies, which may overlap with one another.

Adolescent↗

PubMed1998

Primary reading epilepsy.

This is a report of a 23-year-old-man with primary reading epilepsy. He had had three generalized tonic-clonic seizures, each time beginning with visual illusions and occurring while reading a political science text in English with complicated words. He also described tightness and stiffness in the jaw and musculature of mastication for the past 2 years, which only lasted for a few seconds and only appeared while reading political science books in English. He noted that this sensation was associated with misreading of foreign and difficult words and disappeared when he stopped reading. This case report supports the view that difficult words and misreading are provocative factors evoking seizures in reading epilepsy.

Adult↗

PubMed1997

Childhood occipital epilepsy: seizure manifestations and electroencephalographic features.

Childhood epilepsy with occipital paroxysms (CEOP) is an idiopathic localization-related epilepsy. A typical seizure in CEOP begins with visual symptoms, followed by hemiclonic seizures, complex partial seizures or generalized tonic-clonic seizures. Benign nocturnal childhood occipital epilepsy (BNCOE), characterized by nocturnal seizures with tonic deviation of the eyes followed by vomiting, has the same electroencephalographic features as CEOP. In this study, we report the seizure symptoms and electroencephalographic features of 21 cases with CEOP or BNCOE. Out of these patients, nine had BNCOE, six had CEOP, four had CEOP and BNCOE and the remaining two belonged to the incomplete syndrome because of no paroxysmal discharges in EEG. When the patients with BNCOE awoke from sleep, they had tonic deviation of the eyes and could describe visual symptoms. Patients with CEOP had seizures beginning with visual symptoms followed by loss of consciousness but no generalized convulsions. In three cases, in addition to the occipital spikes, independent centro-temporal spikes were recorded and in another three cases generalized spike-wave discharges were recorded. Such a combination suggests the idiopathic nature of these epilepsies. We concluded that in the diagnosis of CEOP and BNCOE, the seizure symptomatology is important even if the EEG can be considered normal.

Adolescent↗

PubMed1994

Effect of antiepileptic drugs on erythrocyte osmotic fragility and lipid peroxidation.

Epileptic children receiving antiepileptics were studied to investigate the effect of carbamazepine and phenobarbital therapy on erythrocyte osmotic fragility and lipid peroxidation. Significant differences between the two groups were observed in erythrocyte osmotic fragility. In addition, there was a significant increase in erythrocyte malondialdehyde release in the epileptic group compared to controls. It is suggested that the use of antioxidants in addition to antiepileptic drugs may be beneficial.

Adolescent↗