Many people ask about the hallucination side effects of LSD meaning. The main effects are vision distortion of color, audio problems, pupil dilation, hallucinations, depression, and anxiety. Flashbacks, high blood pressure, and increased body temperatures are also some of the immediate effects. Major psychosis and extreme mood changes are also common with an overdose of the drug. There are many physical issues such as nausea, diabetes, sleep issues, appetite loss, dry mouth, seizures, and more. Many experience frightening hallucinations like seeing people moving, shadows, or fear of losing control and various other mental problems. One can even hear distorted sounds or see odd visuals. Such side effects cause extreme stress and last long.