Compassionate use of esketamine intranasal in patients with severe major depressive disorder resistant to the treatment.

Background: Treatment-resistant depression (TRD) is defined as the failure of at least two antidepressants in adequate doses and timing during a major depressive episode. Esketamine intranasal (ESK-IN) has been approved by the Food and Drug Administration and the European Medicines Agency for the treatment of TRD in combination with other antidepressants.

Aims: To assess the effectiveness and tolerability of a sample of TRD patients who received treatment with ESK-IN as part of the compassionate use program.

Treating Treatment-resistant Depression with Esketamine Nasal Spray When All Therapeutic Options Have Been Exhausted: Clinical Experience from a Spanish Cohort of Expanded Use.

Objective: : Treatment Resistant Depression (TRD) is commonly defined as the lack of response to two or more anti-depressants with different mechanisms of action. Up to 30% of patients diagnosed with major depressive disorder might be considered to present TRD. The objective of this study was to assess the effectiveness and tolerability of esketamine in patients diagnosed with TRD, who were referred to our program after exhausting all available treatments.

Improvement of functional neurological disorder after administration of esketamine nasal spray: a case report.

Functional neurological disorder (FND) is a complex neuropsychiatric condition characterized by the presence of neurological symptoms and signs (either motor or sensory) that cannot be explained by any known medical or mental disease. It is frequently presented with psychiatric comorbidities, such as major depression. Its prognosis is poor, with low improvement or recovery rates at 1 year after their onset, and no particular treatment has demonstrated significant efficacy in this regard.