What disease is characterized by muscle rigidity, tremors, and bradykinesia?

The characteristics of muscle rigidity, tremors, and bradykinesia are hallmark features of Parkinson's disease, a progressive neurological disorder that primarily affects movement. This disease is caused by the degeneration of dopamine-producing neurons in the brain, particularly in an area called the substantia nigra. As dopamine levels drop, coordination of muscle movements becomes impaired, leading to the symptoms observed.

Muscle rigidity refers to the stiffness and resistance to movement in the muscles, while tremors often present as rhythmic shaking, typically starting in the hands. Bradykinesia manifests as a marked reduction in spontaneous movement, making actions such as walking or fine motor tasks more challenging for individuals affected by the disease.

In contrast, other conditions mentioned do not present this specific triad of symptoms. Osteomyelitis is an infection of the bone that usually causes pain and fever rather than tremors or rigidity. A subdural hematoma is a collection of blood outside of blood vessels in the brain, often resulting from head injury, and causes different neurological signs such as headache or confusion. Epilepsy primarily involves seizures due to abnormal brain activity and is characterized by episodes of altered consciousness or convulsions, not muscle rigidity or consistent tremors. Thus, the correct answer