Ms. N and her mother reported the assault to the police and were awaiting legal action.
During the interview with the psychiatry team, Ms. N denies that any thoughts or actions trigger the episodes and reports that she cannot control when they happen. Because she cannot anticipate the episodes, she says she is afraid to leave her house. She does not know why the episodes are happening and feels frustrated that they are getting worse. Ms. N says, “I have been feeling down lately,” but she denies hopelessness, worthlessness, suicidal ideation, homicidal ideation, delusions, or hallucinations.
In the hospital, when the psychiatry team asks Ms. N about her visits with her father, she says that they are “too painful to talk about,” and fears that discussing them will trigger an episode. However, her mother suggests that her daughter’s sexual trauma, as well as ongoing frustrations with the legal system, are influencing her mood; she has had low energy, poor appetite, and is spending more time in bed. Her mother also reports that Ms. N “avoids going out in the sun and spending time with her friends outside. She doesn’t seem to enjoy shopping and art like she used to.” Ms. N told her mother that she was having nightmares about the trauma and “could not stop thinking about some of the bad stuff that happened during the day.”
Ten minutes into the interview, while being questioned about her father, Ms. N experiences a spastic episode. She curls up in bed on her left side, clenches her entire body, and shuts her eyes. Her mother quickly runs to her bedside and counts the seconds until the end of the episode. After 25 seconds, Ms. N awakes with full recollection of the episode. On review of the video EEG during the episode, no ictal patterns are seen.
The authors’ observations
Paroxysmal episodes of weakness, numbness, and muscle spasms in a young female are suggestive of either epilepsy or nonepileptic seizure (NES).1,2 The negative EEG and physical features are inconsistent with epileptiform seizure, and Ms. N’s history and evaluation are suggestive of NES. Nonepileptic seizures are a type of a conversion disorder, or functional neurologic symptom disorder, in which a patient experiences weakness, abnormal movements, or seizure-like episodes that are inconsistent with organic neurologic disease.3 When a diagnosis of conversion disorder is suspected, a clinician must always consider other pathology that can explain the symptoms, such as migraine, vasovagal syncope, or intracranial mass. If a patient has focal neurologic deficits, head imaging should be pursued. Additionally, the clinician must screen for malingering and factitious disorder before establishing a definitive diagnosis. However, conversion disorder is not a diagnosis of exclusion. For example, a negative EEG does not rule out epilepsy, and patients can have both epilepsy and concomitant NES.
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