# Treatment of idiopathic hypersomnia with modafinil in an individual at clinical high risk for psychosis: A case report

## TL;DR

A teenager with depression and a high risk of psychosis was successfully treated for excessive daytime sleepiness using modafinil without worsening her condition.

## Contribution

This case report is the first to demonstrate modafinil's efficacy and safety in treating hypersomnia in someone at clinical high risk for psychosis.

## Key findings

- Modafinil improved excessive daytime sleepiness in a patient with CHR-P without causing side effects or worsening psychotic symptoms.
- The patient's sleepiness returned after entering university but was again effectively managed with a higher modafinil dose.
- No transition to psychosis occurred during modafinil treatment.

## Abstract

Recent studies have shown that sleep disturbances are frequent at different stages of psychosis, including clinical high risk for psychosis (CHR‐P). However, the comorbidity of hypersomnia with CHR‐P and its treatment have rarely been reported or discussed.

A 16‐year‐old female diagnosed with major depressive disorder and CHR‐P experienced worsening excessive daytime sleepiness (EDS), including falling sleep in class. Polysomnography and multiple sleep latency tests confirmed the diagnosis of idiopathic hypersomnia (IH), and treatment with modafinil (100 mg/day) was initiated. EDS improved after increasing the modafinil dose to 200 mg/day. No side effects or exacerbations of psychotic symptoms were observed. EDS recurred after she entered university and was treated with 300 mg/day of modafinil without side effects or transition to psychosis.

This case demonstrates modafinil's efficacy and safety in treating IH in individuals with CHR‐P. However, whether modafinil use increases the risk of transition to psychosis remains unclear. Further research is required on modafinil as a treatment for hypersomnia in individuals with CHR‐P.