Parkinson’s disease and Tardive Dyskinesia (TD) are neurological conditions that affect one’s movements and can significantly impact one’s quality of life. Parkinson’s typically has a gradual onset and progresses slowly, while TD results from prolonged exposure to specific treatments. So, while doctors suggest new treatments to manage Parkinson’s, TD management often involves discontinuing the current ones and considering alternative treatments. While these conditions are distinct, they share some symptoms that are easy to miss.

Reduced facial expressions
Both TD and Parkinson’s disease affect facial expressions, like blinking issues or the inability to smile. TD may cause rapid, uncontrollable blinking, while Parkinson’s often leads to a decreased ability to blink as an unconscious, reflexive movement. This can potentially lead to eye dryness and discomfort. The lack of expressiveness on one’s part can be misunderstood as moodiness or disinterest, making it crucial to consider the possibility of an underlying neurological condition.

Involuntary movements
One of the earliest and most subtle symptoms of both Parkinson’s and TD is difficulty with fine motor skills. TD often presents as repetitive, purposeless movements, such as finger tapping or writhing motions, resembling playing the piano. In Parkinson’s, involuntary movements are characterized by tremors in the fingers or hands or rhythmic shaking in various body parts. Both these conditions make everyday tasks like buttoning a shirt or holding a utensil challenging.

Speech issues
Speech changes are common in both Parkinson’s and TD. Individuals may notice slurred speech, a softening of the voice, or even a stutter. These alterations in speech can be subtle and might initially be dismissed as normal aging or unrelated issues. However, addressing speech changes early can lead to better management of the conditions.

Muscle stiffness and spasms
Muscle stiffness and rigidity are hallmark symptoms of Parkinson’s disease, contributing to the characteristic slowness of movement. However, they can also occur in TD. In addition, TD patients may experience muscle spasms in the form of repetitive, jerky movements affecting the face, tongue, or limbs.

Balance and posture issues
Another shared symptom between Parkinson’s and TD is impaired balance and posture. Individuals may experience stooped posture, a shuffling gait, or a tendency to fall. TD patients may exhibit abnormal postures, such as one’s neck being twisted at an odd angle, as one of the side effects of ongoing treatments. These issues may be mistaken for age-related changes or general clumsiness, so it’s best to get them diagnosed early for proper professional intervention.