Definition: BPD2 (Basal Dactyl Syndrome) is a type of brainstem motor neuron disorder characterized by severe dystonia, rigidity, spasticity, and ataxia. It's caused by damage to the motor neurons in certain areas of the brain responsible for controlling voluntary movements. BPD2 is usually associated with a genetic background or environmental factors, like birth trauma, infection, or exposure to toxins. The disorder typically develops between 3 and 5 years old and progresses until it can't be controlled by medical treatments. This condition often leads to severe challenges in daily life such as difficulty walking, sitting up straight, and using utensils, which can impact quality of life significantly. It's crucial for early detection and treatment to prevent further complications or exacerbations of symptoms.