What condition is characterized by Parkinsonian symptoms such as tremor and shuffling?

The condition characterized by Parkinsonian symptoms such as tremor, rigidity, and shuffling gait is Parkinsonism. Parkinsonism encompasses a group of disorders that feature these motor symptoms typical of Parkinson's disease, which is primarily caused by the degeneration of dopamine-producing neurons in the brain. The symptoms arise due to a disruption in the normal functioning of the basal ganglia, which is critical in movement control.

In relation to other conditions, akathisia involves a feeling of inner restlessness and an uncontrollable need to be in constant motion, but it does not present with the classical movement symptoms associated with Parkinsonism. Neuroleptic Malignant Syndrome is a severe reaction to neuroleptic medications characterized by severe muscle rigidity, hyperthermia, and autonomic instability rather than the classic tremor or bradykinesia found in Parkinsonism. Tardive Dyskinesia refers to involuntary, repetitive body movements that are typically a side effect of long-term use of antipsychotic medications, differing notably from the foundational symptoms of Parkinsonism.

Thus, the defining presence of tremor and shuffling gait specifically aligns with Parkinsonism, making it the correct choice in identifying the condition in question.