Nightmares can be caused by many types of bacteria depending on the nature of the dream. Dark nightmares likely caused by bacillus.

Nightmares can cause early waking insomnia.

Can be caused by Sleep apnea.

Medications that cause nightmares [1]

Vaccine for coronavirus causing strange dreams [2] likely from upregulation of bacillus.

Dream within a dream

Woke up very sleepy, brain zaps, weak hands, and cold. Brain zaps campylobacter, weak hands brucella, and cold stenotrophomonas. Not sure about the very sleepy symptom, but may be from elevated pgd2. The dream told me that I injured my head. The dream within a dream was strange and pseudo lucid.

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