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30 Possible Causes for Frontal Intermittent Rhythmic Delta Activity

  • Hyperventilation

    Practice Essentials Hyperventilation syndrome (HVS) represents a relatively common emergency department (ED) presentation that is readily recognized by most clinicians. However, the underlying pathophysiology has not been clearly elucidated. As typically defined, HVS is a condition in which minute ventilation exceeds[…][]

  • Stroke

    In most cases, it occurs in a rhythmic and intermittent manner, and the most commonly and important types are frontal intermittent rhythmic delta activity (FIRDA) ( Fig 2[] Frontal intermittent rhythmic delta activity (FIRDA) in pituitary adenoma. Clin Electroencephalogr 1995;26:173-179. [ Links ] 29.[] ), occipital intermittent rhythmic delta activity (OIRDA) and temporal intermittent rhythmic delta activity (TIRDA) ( Fig 3 ).[]

  • Hyponatremia

    Hyponatremia Other names Hyponatraemia, low blood sodium, hyponatræmia Sodium Specialty Internal medicine Symptoms Decreased ability to think, headaches, nausea, poor balance, confusion, seizures, coma [1] [2] Types Low volume, normal volume, high volume [3] Diagnostic method Serum sodium 135 mmol/L [2] Differential[…][]

  • Susac Syndrome

    The EEG showed frontal intermittent rhythmic delta activity.[] Susac syndrome with frontal intermittent rhythmic delta activity (FIRDA). Can. J. Neurol. Sci. 33, 403–406 (2006). 91. Erer, S. et al.[] Frontal intermittent rhythmic delta activity can be seen in Susac syndrome.[]

  • Cerebral Hemorrhage

    While ischemic strokes happen when the blood flow to a part of the brain is interrupted, a hemorrhagic stroke is caused when there is bleeding into brain tissue that kills blood cells. A cerebral hemorrhage can take several forms: Intracerebral hemorrhages. This is bleeding inside the brain. The symptoms and[…][]

  • Cerebral Neoplasm

    Preserving vital cerebral function while maximizing tumor resection is a principal goal in surgical neurooncology. Although functional magnetic resonance imaging has been useful in the localization of eloquent cerebral cortex, this method does not provide information about the white matter tracts that may be involved[…][]

  • Subdural Hematoma

    Chronic subdural hematoma (CSDH) is prevalent among elderly populations worldwide, and its mysterious pathogenesis has been discussed in the literature for decades. The issues remaining to be solved in regard to CSDH include the initiating events; the bleeding into the subdural space and the formation of the outer[…][]

  • Subarachnoid Hemorrhage

    Subarachnoid hemorrhage (SAH) is bleeding into the subarachnoid space—the area between the arachnoid membrane and the pia mater surrounding the brain. Symptoms may include a severe headache of rapid onset, vomiting, decreased level of consciousness, fever, and sometimes seizures. Neck stiffness or neck pain are[…][]

  • Metabolic Encephalopathy

    […] patterns, e.g., frontal intermittent rhythmic delta activity (FIRDA), or spikes and sharp waves as well as spike-wave discharges in temporal regions. [37] In hyponatremia[] activity suppression, or an electrocortical silence. [35], [36] In the patients with hypoglycemia, EEG can register diffuse theta activity with occasional occurrence of specific[] […] suppression of the EEG reactivity, loss of fast rhythm with occurrence of diffuse slow activity (theta and delta), presence of particular EEG patterns (focal or generalized), intermittent[]

  • Brain Neoplasm

    Continuum (Minneap Minn). 2015 Apr;21(2 Neuro-oncology):480-6. doi: 10.1212/01.CON.0000464183.35322.5f. Abstract Neurologists are often on the front lines of diagnosis for primary and metastatic brain tumors. Patients with brain tumors typically have multiple comorbidities and pain generators beyond headache,[…][]

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