Insomnia
Insomnia was a medical symptom characterized by an inability to sleep. One who suffered lapses of memory and ability after lack of sleep was said to be "punchy". ()

 began suffering from insomnia after the Xindi attack on Earth. () 

Captain Jean-Luc Picard sometimes experienced insomnia and when he did, he would try to perfect his aunt 's recipe for a steamed milk toddy with nutmeg. ()

When Geordi La Forge was brainwashed by Romulans in 2367 he also suffered from insomnia. He came to sickbay and Doctor Beverly Crusher gave him an somnetic inducer to help him sleep. ()

In 2369, Julian Bashir claimed a Bajoran officer was suffering from hormonal chronic insomnia. ()

After encountering the Dream Aliens in 2374, many  crewmembers began suffering from acute insomnia. ()

Julian Bashir described the Kal'Hyah ceremony as being a "feast of insomnia and discomfort". ()

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Medical conditions
Sleep