10. Slowed Movement: The Time-Delayed Effect of Juvenile Huntington’s Disease
Another symptom under the motor domain affected by JHD is bradykinesia, or slowed movement. Unlike chorea, where movements are quick and uncontrollable, bradykinesia describes a significant reduction in the speed and fluidity of voluntary movements. This symptom can cause a marked delay in the child’s responses, making tasks like walking, dressing, or even eating more time-consuming and challenging.
The cause of bradykinesia in JHD lies in the breakdown of neural circuits within the brain that control motor function. Due to the ongoing damage caused by the mutated huntingtin protein, the speed and efficiency of these motor circuits are compromised. As a result, children with JHD can struggle with tasks requiring speed, coordination, or fine motor skills.
Slowed movements can be frustrating for the child, making them feel as though they’re constantly lagging behind their peers. It also poses practical challenges, as tasks that were once simple and quick to perform now require extra time and effort.
Like many other JHD symptoms, bradykinesia can be managed with appropriate interventions. Physical and occupational therapists are vital in helping the child learn techniques to compensate for slowed movements and maintain as much independence as possible.
This might involve breaking down tasks into smaller, more manageable steps or using assistive devices to improve function. With the right support, the impact of slowed movement on the child’s daily life can be minimized, enabling them to engage more fully in activities they enjoy. (10)
