What are cerebellar arteries?

What are cerebellar arteries?

A cerebellar artery is an artery that provides blood to the cerebellum. Types include: Superior cerebellar artery. Anterior inferior cerebellar artery. Posterior inferior cerebellar artery.

What is the PICA artery?

The posterior inferior cerebellar artery (PICA) is the vessel that perfuses the lateral medulla, and is usually occluded due to thrombosis or embolism in its parent vessel, the vertebral artery.

What is the most common cause of cerebellar disease?

Cerebellar disease can result from a number of underlying conditions, many of which are listed in Box 91-1. The most prevalent causes of acute cerebellar ataxia are viruses (e.g., coxsackievirus, rubeola, varicella), traumatic insults, and toxins (e.g., alcohol, barbiturates, antiepileptic drugs) (see Chapter 92).

What is cerebellar pathology?

The cerebellum is the area of the brain that controls coordination and balance. Problems with the cerebellum include: Cancer. Genetic disorders. Ataxias – failure of muscle control in the arms and legs that result in movement disorders.

Is PICA a stroke?

The PICA syndrome is also known as “lateral medullary syndrome”, or “Wallenberg’s syndrome”, after Wallenberg’s description in 1895. This is the most common brainstem stroke. It is typified by vertigo, ipsilateral hemiataxia, dysarthria, ptosis and miosis.

What is PICA termination?

PICA termination of vertebral artery (PICA-VA) happens when the vertebral artery does not communicate directly with the basilar artery and ends in PICA instead (Fig. 3). 4 PICA- VA is a variant of vertebral artery hypoplasia and is present in 2% of population.

What are cerebellar signs?

A simple mnemonic to remember some of the cerebellar signs is DANISH:

• Dysdiadochokinesia/ dysmetria.
• Ataxia.
• Nystagmus.
• Intention tremor.
• Speech – slurred or scanning.
• Hypotonia.

Is Parkinson’s a cerebellar disorder?

There are Parkinson’s disease-related pathological changes in the cerebellum. Functional or morphological modulations in the cerebellum were detected related to akinesia/rigidity, tremor, gait disturbance, dyskinesia and some non-motor symptoms.

What does the occipital lobe do?

The occipital lobes sit at the back of the head and are responsible for visual perception, including colour, form and motion. Damage to the occipital lobe can include: Difficulty with locating objects in environment. Difficulty with identifying colours (Colour Agnosia)