Final answer:
Conversion disorder refers to symptoms that affect voluntary motor and sensory functions without a known medical explanation, and it is distinct from neurodegenerative diseases, which have identifiable organic causes.
Step-by-step explanation:
If a person's bodily symptoms affect voluntary motor and sensory functions but are inconsistent with any known medical disease, this condition is referred to as c) Conversion disorder. Conversion disorder involves symptoms of altered motor or sensory function that are not explained by medical or neurological conditions. Patients with this disorder may experience symptoms such as weakness, paralysis, sensory loss, or movement disorders, such as ataxia. Unlike malingering or factitious disorder, there is no intentional production of symptoms in conversion disorder, and it is not simply an exaggeration of symptoms as in hypochondriasis.
Conversion disorder is part of a group of psychological disorders known as psychophysiological disorders, where the physical symptoms are real but can be produced or exacerbated by psychological factors. It is also distinct from neurodegenerative diseases such as Alzheimer's, Parkinson's, or multiple sclerosis, which have identifiable organic causes and result in the death of neurons or the degradation of myelin. Current therapies for neurodegenerative diseases focus on how degeneration takes place and may be similar across different diseases.