Feelings of impending doom
Feelings of impending doom can be described as feelings of apprehension, dysphoria, or fear based upon the perception that a negative event will inevitably occur in the near future such as a disaster, one's death, or the world coming to an end. This effect can be the result of real evidence, but is most often based on assumption, false pretense, or negative hallucinations. These feelings can range from subtle and ignorable to intense and overwhelming enough to trigger panic attacks and a strong sense of urgency.
This effect can be a manifestation of a number of things including reactions to certain psychoactive substances, medical issues, mental illness, or interpersonal problems. Feelings of impending doom are often accompanied by anxiety, depression, or unspeakable horrors.
Psychoactive substances
Compounds within our psychoactive substance index which may cause this effect include: