Introduction:

When we think about studying the cerebellum, the first thing that comes to mind may be the following questions: Which are its diseases? How they are clinically expressed? , and perhaps: What is its structure and what functions do this organ has?

Objective:

Examine the main anatomical and functional characteristics of the cerebellum and relate them to its clinical expression when it becomes ill, as well as comment on its range of etiologies in the child.

Methods:

Search sources were computerized databases like: PubMed, Ebsco, and SciELO. Keywords used were: cerebellum, ataxia, metabolism congenital errors and ataxias, episodic ataxias, progressive diseases of the nervous system and ataxias; in Spanish and English.

Results:

The cerebellum receives information and sends it to various brain structures through which it modulates the excitability of these structures and their downstream systems. This organ organizes, directs, and coordinates multiple functions that translate into strength, time and sequence. An ill cerebellum prevents the person from performing their functions and movements in a uniform and coordinated way; it can be affected by a wide range of etiological, genetic or acquired possibilities and make all or part of it ill.

Final considerations:

The cerebellum performs important functions within the nervous system; it has a very typical expressiveness when it is ill. Proper use of new imaging and genetic study techniques, among others, allows the clinical pediatricians to be better able to diagnose its conditions and timely treatment.

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