Dextromethorphan/Quinidine for Pseudobulbar Affect Following Stroke: Safety and Effectiveness in the PRISM II Trial

[Emotional disorders after stroke]

Emotional disorders are common among patients after stroke. They include anger, fear, emotional expression control (uncontrollable crying, laughing), emotional indifference (apathy), disorders of emotion recognition and emotional empathy. They might develop independently or as a presentation of depression, anxiety, catastrophic reaction, posttraumatic stress disorder etc. Treatment of post-stroke emotional disorders include pharmacotherapy, psychotherapy, neuromodulation.

Neuropsychiatric Complications after Stroke

Neuropsychiatric disturbances represent a common and uniquely challenging consequence of stroke. These disorders arise at the intersection of lesion-related brain dysfunction and psychological distress related to the event and its aftermath, making it difficult to identify what symptom is a direct physiological consequence of the stroke. Depression, anxiety, fatigue, apathy, emotionalism, and anger are the most common of these syndromes, and posttraumatic stress disorder related to the stroke event has become increasingly recognized as a relevant entity. Mania, obsessive-compulsive disorder, and psychosis are less commonly encountered but potentially highly debilitating conditions that may be underrecognized. Early identification and treatment may mitigate functional impairment and improve quality of life. Evidence-based guidelines from the general population are often relied upon to guide treatment. Further research is needed to understand and tailor treatment of these disorders in the poststroke population.

Emotions after stroke: A narrative update

AIM

In this narrative review we aimed to describe how stroke affects emotions and update the readers on the emotional disturbances that occur after stroke.

METHODS

We searched Medline from 1.1.2013 to 1.7.2019, personal files and references of selected publications. All retrieved systematic reviews and randomized controlled trials were included. Other references were selected by relevance.

SUMMARY OF REVIEW

The emotional response includes a reactive behavior with arousal, somatic, motivational and motor components, and a distinctive cognitive and subjective affective experience. Emotional category responses and experiences after stroke can show dissociations between the behavioral response and the cognitive and affective experiences. Emotional disturbances that often occur after stroke include fear, anger, emotional indifference, lack of understanding of other emotions, and lack of control of emotional expression. Emotional disturbances limit social reintegration of the persons with stroke and are a source of caregiver burnout. The evidence to support the management of the majority of emotional disorders in stroke survivors is currently weak and of low or very low methodologic quality. An exception are the disorders of emotional expression control where antidepressants can have a strong beneficial effect, by reducing the number and duration of the uncontrollable episodes of crying or laughing.

CONCLUSION

Our current knowledge of the emotional disorders that occurs in acute stroke patients and in stroke survivors is heterogeneous and limited. Joint efforts of different research approaches, methodologies and disciplines will improve our current understanding on emotional disorder after stroke and indicate rational pathways to manage them.

A Major Depressive Disorder in a Patient with Pseudobulbar Affect

Pseudobulbar affect is a condition that presents as involuntary laughing or crying among patients with certain neurological conditions or injuries. There is an outburst of crying or laughing that may not be connected to the current emotional state. Because pseudobulbar affect often involves crying, the condition is frequently mistaken for depression.

We present the case report of a 54-year-old male patient who had a stroke and who presented to his physician with a chief complaint of crying spells. His family expressed, and his physician believed, that he was suffering from depression because of his dramatic clinical presentation. The patient initially denied that he was depressed. Despite the denial, he was managed with psychotherapy and an antidepressant medication, Remeron (mirtazapine). The treatment did not improve his clinical symptoms. He was eventually treated with dextromethorphan/quinidine (DM/Q), 20 mg/10 mg, with a dramatic resolution of the crying spells. 

However, psychosocial stressors, including the death of his father, job loss, and financial problems, made him depressed with vegetative symptoms. His crying spells came back and became more intense and frequent. He became worthless and hopeless. This depression was unrelated to his stroke. He was diagnosed with a major depressive disorder and was treated with antidepressants and psychotherapy. He experienced the depression several months after his crying spells resolved with the DM/Q. His recent bout of depression was treated with another antidepressant, vilazodone, and he was given a more intensive outpatient psychotherapy treatment. All the psychiatric symptoms, including the crying spells, have improved after treatment.