|Description||Neuropathic effects in the brain stem cause loss of consciousness and sometimes death. Significantly harder to cure|
|DNA cost||21, 8(Neurax Worm)|
|Previous symptom||Paralysis, Systemic Infection, Aphasia(Neurax Worm)|
|Next symptom||Brain Haemorrhage(Neurax Worm), Acute Encephalitis(Necroa Virus)|
Of all symptoms that specifically make the plague harder to cure (Coma, Paralysis, and Insanity), Coma has the largest effect of all of them. This symptom has a low lethality rate compared with other tier 4 symptoms, meaning it is usually used to slow cure progress rather than to kill rapidly.