Transient ventricular arrhythmia as a rare cause of dizziness during exercise:A case report

BACKGROUND Dizziness is a common symptom in adults and usually due to peripheral causes affecting semicircular canal function or central causes affecting the pons,medulla,or cerebellum.Arrhythmia is a recognized cause of dizziness in people with structural or ischemic heart disease.We report a case of exercise-induced transient ventricular tachycardia and dizziness in a man with no evidence of organic heart disease.CASE SUMMARY A 42-year-old man presented with a 6 mo history of transient exercise-induced dizziness and prodromal palpitations.The patient was otherwise asymptomatic.Physical examination,otoscopy,vestibular tests,cerebellar tests,laboratory investigations,and imaging investigations were all unremarkable.Twenty-four hour Holter monitoring revealed four episodes of transient ventricular tachycardia during exercise.The patient was started on metoprolol and subsequently underwent radiofrequency catheter ablation.The patient reported a full recovery and no dizziness during daily activities.These results were maintained at the 6 mo follow-up.CONCLUSION Ventricular tachycardia is an uncommon but potentially serious cause of dizziness.The outcome of this case illustrates the benefits of careful clinical examination and communication with specialized centers.High clinical suspicion of arrhythmia in a patient with dizziness merits consultation with a cardiologist and referral to a specialized center to ensure timely diagnosis and treatment.

Temporal lobe malacia as a rare cause of gelastic seizure:A case report

BACKGROUND Gelastic seizure(GS)is a rare type of epilepsy that most commonly appears in patients with hypothalamic hamartoma.It is rarely associated with other types of brain damage.This particular type of epilepsy is relatively rare and has few links to other brain lesions.Temporal lobe malacia is mostly caused by cerebral infarction or cerebral hemorrhage,which can lead to seizures.We report a case of GS in a woman with temporal lobe malacia which was reported for the first time in the literature.CASE SUMMARY A 73-year-old female,diagnosed case of GS,presented with repetitive stereotyped laughter a month prior to presentation,happening multiple times daily and with each time lasting for 5-15s.Electroencephalogram displayed a focal seizure seen in the right temporal region.Magnetic resonance imaging head with contrast showed a right temporal lobe malacia.The patient was started on levetiracetam daily.The patient indicated that they had fully recovered and were not experiencing any recurrent or stereotyped laughter during their daily routines.These results remained consistent even after a one-year follow-up period.CONCLUSION GS can be caused by temporal lobe malacia,which is an uncommon but potentially grave condition.The outcome of this present case exhibited the importance of the temporal lobe in the genesis of GS.