Final answer:
The symptoms described point toward a disorder involving the autonomic nervous system, which controls involuntary body functions and maintains homeostasis.
Step-by-step explanation:
The problem described relates to the autonomic nervous system. Symptoms such as change in vocal tone, problems swallowing, inability to control urination, erratic heart rate, and gastric problems are indicative of issues with nerve function that regulates involuntary body processes. Disorders affecting the autonomic nervous system can manifest in numerous ways, including balance and posture problems, difficulty with coordination, and autonomic instability.
Conditions like Tourette syndrome and Horner's syndrome, along with kidney functions being controlled by the nervous system, highlight the extensive impact of the autonomic nervous system on bodily functions. The autonomic nervous system is divided into the parasympathetic and sympathetic nervous systems and plays a critical role in maintaining homeostasis. Damage or dysfunction in this system can lead to extensive disruptions, affecting the cardiovascular, urinary, and gastrointestinal systems.