Neurology Notes

Most common cause of arrhythmic cardiac syncope

Atrioventricular block

Most common arrhythmias causing syncope

AV block

Most common congenital malformation causing syncope

Tetralogy of Fallot

Most common symptom of colloid cysts of the third ventricle

Position-induced headaches

Unprovoked falling – second most common symptom

Most common behavioral disorder in a medical-surgical setting


Most common cause of delirium in elderly

Metabolic disturbances,

Most common cause of delirium in young individuals

Drug abuse and alcohol withdrawal

Most common causes of decreased respiratory rate

Metabolic or toxic, such as carbon dioxide narcosis or drug overdose with central nervous system (CNS) depressants.

Most common source of underlying infection in brain abscess

Infections of the middle ear, mastoid, and paranasal sinuses

Ocular bobbing

Ocular bobbing – rapid downward jerks of both eyes are observed, followed by a slow
return to the midposition.

Typical Ocular bobbing

Typical Ocular bobbing – there is associated paralysis of both reflex and spontaneous horizontal eye

Typical ocular bobbing is specific but not pathognomonic for acute pontine lesions.

Atypical ocular bobbing

Occurs with anoxia

It is nonlocalizing

Inverse ocular bobbing – Ocular dipping

Spontaneous eye movements in which an initial slow downward phase is followed by a relatively rapid return.

Reflex horizontal eye movements are preserved. It usually is associated with diffuse cerebral damage.

Reverse ocular bobbing –

slow initial downward phase, followed by a rapid return that carries the eyes past the midposition into full upward gaze. Then the eyes slowly return to the midposition

NINDS-AIREN diagnostic criteria is used for

vascular dementia

What is the most common psychiatric disturbance in persons with Parkinson Disease?


What is the most common behavioral symptom in Multiple Sclerosis?


Most common neuropsychiatric outcomes of stroke



It is a neurological condition in which the patient is unaware of their neurological deficit or psychiatric condition.

Which circuits are most commonly implicated in neuropsychiatric symptoms?

Limbic system and the frontosubcortical circuits

Which is the most common human prion disease?

Creutzfeldt–Jakob disease

Most common sign of vitamin B12 deficiency is –

macrocytic anemia

What is the triad of Porphyric attacks ?

  • Abdominal pain
  • Peripheral neuropathy
  • Neuropsychiatric symptoms.

Most common primary malignancies that promote neurological paraneoplastic syndromes are

Ovarian cancer and Small-cell lung cancer

Most common intracranial primary tumors are

Astrocytomas (e.g., glioblastoma multiforme)

Postictal psychosis is most commonly associated with

Temporal lobe epilepsy.

What is the most common site of hypertensive intracerebral hemorrhage?


What is the most common form of motor neuron disease?

Amyotrophic lateral sclerosis

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