Insomnia is a tier 1 symptom. It makes people unable to sleep, making them less productive. This increases the cure requirement by 3%. This symptom does increase severity, but has no effect on the infectivity of your disease.


  • This symptom only raises severity a small amount, so it should be safe to evolve even at higher difficulties. With the tier 1 symptom Anaemia, it can make the Walking Dead symptom combo, which unlocks the Brainzzzz achievement.

Insomnia is a tier 1 symptom in the Necroa Virus DLC.

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