Abstract
Delirious mania (the coexistence of delirium and mania) is described in the literature but not recognised in standard nosologies. We report a woman in her late 30s, with no psychiatric history, who presented with concurrent symptoms of mania and delirium. She was diagnosed with COVID-19 pneumonia (positive reverse transcription-PCR test). There was no history of substance misuse or concurrent medical illness. CT head scan was normal as were blood investigations, other than elevated inflammatory markers. She received standard treatment for COVID-19 pneumonia and lorazepam and quetiapine to treat her neuropsychiatric symptoms. She made a full recovery after 9 days. She was apyrexial with normal oxygen saturation throughout her illness. The case shows that severe neuropsychiatric symptoms can complicate otherwise mild COVID-19 pneumonia with neuroinflammation being a possible mechanism. A diagnosis of delirious mania appears to better capture the complexity of the presentation than a diagnosis of mania or delirium alone.