1. Delayed encephalopathy caused by carbon monoxide poisoning: After the condition improves, it will get worse, with symptoms such as unconsciousness, mental disorder and motor coordination dysfunction, and even life-threatening in severe cases. Once it happens, it will leave different degrees of sequelae.

2. Sequela of carbon monoxide poisoning: Carbon monoxide poisoning will cause damage to many organs and tissues of the whole body, especially brain tissue. If the treatment is delayed or improper, sequelae may occur.