Types of Cerebral Palsy and Their Characteristics

Study Notes

Cerebral palsy is a group of permanent disorders affecting muscle tone, movement, posture, balance, coordination, and reflexes. It can occur early in development due to abnormal brain development, head injuries during birth, stroke after birth, or genetic mutations. There are four main types of cerebral palsy based on the predominant motor impairment observed: spastic, dyskinetic, ataxic, and mixed. Each type has specific characteristics that affect how it affects people physically and cognitively.

Spastic Cerebral Palsy

Spastic cerebral palsy is characterized by stiff muscles, which typically result from damage to the pyramidal tract. This type accounts for over 70% of all cases. Symptoms may vary depending on the level affected:

Hemiplegia (affecting one side) involves tightness primarily in one arm and leg.
Diplegia (affecting both sides) usually impacts legs more severely, with arms less involved.
Quadriplegia (all limbs) means all parts of the body have increased muscle tension.

In addition to physical symptoms, children with spastic CP may also experience speech difficulties, vision problems, hearing issues, and intellectual disabilities.

Dyskinetic Cerebral Palsy

Dyskinetic cerebral palsy is caused by damage to other pathways besides the pyramidal tracts. It's characterized by involuntary movements such as chorea (fluid body movements), dystonia (abnormally high muscle tone), and athetosis (slow writhing movements). These conditions often lead to impaired fine motor skills, difficulty walking, writing, eating, dressing, etc.. People with this form of CP often require occupational therapy, speech therapy, or feeding tubes due to swallowing difficulties.

Ataxic Cerebral Palsy

Ataxic cerebral palsy results from damage to the cerebellum, which controls coordinated body movements, balance, and maintaining equilibrium. Children with ataxic CP present with unstable gait, autonomic dysfunction, underdeveloped muscle strength, and poor proprioception. They struggle with activities like walking, standing upright without support, or maintaining proper balance while sitting down.

Mixed Cerebral Palsy

Mixed cerebral palsy includes features of two or three primary forms of CP, meaning individuals exhibit traits associated with multiple classifications simultaneously. This reflects the complexity of brain injury patterns that can cause CP, often occurring when there isn't clear dominance among different neural networks. Combined presentations tend to involve severe deficiencies across several functional domains, leading to significant challenges in daily life.

Each case varies according to severity, specific motor functions impacted, cognitive abilities, and secondary complications such as seizures. Treatments focus on managing symptoms through therapies like physiotherapy, occupational therapy, and adapted assistive devices; medications target underlying conditions if possible; and surgery might be necessary to correct deformities. Despite these treatments, some patients will continue experiencing limitations throughout their lives.

Description

Learn about the four main types of cerebral palsy - spastic, dyskinetic, ataxic, and mixed - and their specific characteristics. Understand how each type affects individuals physically, cognitively, and the various symptoms associated with them.