Differential Diagnosis
The patient's symptoms have been ongoing for 45 years, and they are able to comply with corrections when distracted or asked to correct their posture and speech. Based on this information, the following differential diagnosis is proposed:
- Single most likely diagnosis
- Conversion Disorder (Functional Neurological Disorder): The patient's ability to comply with corrections when distracted suggests a psychological component to their symptoms, which is consistent with conversion disorder. The long duration of symptoms also supports this diagnosis.
- Other Likely diagnoses
- Habit Disorder: The patient's symptoms may be a deeply ingrained habit, which they are able to break when distracted or reminded to correct their posture and speech.
- Factitious Disorder: The patient may be intentionally producing or feigning their symptoms, which they are able to stop when distracted or asked to correct their behavior.
- Do Not Miss (ddxs that may not be likely, but would be deadly if missed.)
- Neurodegenerative Disease (e.g. Parkinson's disease, Huntington's disease): Although less likely, it is essential to rule out a neurodegenerative disease, as these conditions can have a significant impact on the patient's quality of life and require prompt treatment.
- Structural Brain Lesion (e.g. tumor, cyst): A structural brain lesion could be causing the patient's symptoms, and it is crucial to rule out this possibility to avoid missing a potentially life-threatening condition.
- Rare diagnoses
- Dystonia: A rare neurological disorder characterized by involuntary muscle contractions, which could be causing the patient's symptoms.
- Tic Disorder: A rare condition characterized by repetitive, stereotyped movements or vocalizations, which could be contributing to the patient's symptoms.