Which symptom is NOT part of the TRAP acronym for Parkinson's disease?

In the context of Parkinson's disease, the TRAP acronym refers to the four cardinal symptoms: Tremors, Rigidity, Akinesia (or Bradykinesia), and Postural instability. Each of these symptoms plays a significant role in the diagnosis and understanding of the condition.

Tremors are typically present in many patients with Parkinson's and are often one of the earliest signs. Rigidity refers to the stiffness of the muscles, which can lead to discomfort and difficulty with movement. Akinesia, which includes bradykinesia, involves a reduction in voluntary movement, significantly impacting a person's ability to initiate movements. Postural instability indicates a loss of balance and coordination, which can lead to falls.

Fatigue, while a common complaint among patients with Parkinson's disease, does not fall under the TRAP acronym. It is often reported and can significantly affect the quality of life, but it is not one of the primary motor symptoms associated with the disorder. Thus, in the context of this question, identifying fatigue as the symptom not part of the TRAP acronym highlights the distinction between commonly recognized motor symptoms and those that may be secondary or related to the overall experience of living with Parkinson's disease.