LSD/Hallucinogens
• Extremely dilated pupils
• Excessive perspiration and body odor
• Distorted sense of sight, hearing and touch; distorted image of self and time perception
• Mood and behavior changes, the extent depending on the emotional state of the user and environmental conditions
• Unpredictable flashback episodes even long after withdrawal
• Synesthesia, the "seeing" of sounds and the "hearing" of colors
• Depersonalization, acute anxiety, and acute depression sometimes resulting in suicide

Note: Hallucinogenic drugs, which occur both naturally and in synthetic form, distort or disturb sensory input, sometimes to a great degree. Hallucinogens occur naturally in primarily two forms: (peyote) cactus and psilocybin mushrooms. Several chemical varieties have been synthesized, most notably: LSD, MDA , STP and PCP.

Ecstasy
• Confusion
• Depression
• Headaches
• Dizziness
• Muscle tension
• Panic attacks and paranoia
• Unconscious clenching of the jaw and grinding teeth
• Possession of pacifiers, lollipops and candy necklaces used to stop jaw clenching
• Severe anxiety
• Vomiting or nausea
• Blurred vision
• Rapid eye movement
• Dilated pupils
• Chills or sweating
• High body temperature, sweating profusely and dehydration
• Confusion
• Trance-like state and transfixed on sites and sounds
• Very affectionate

source: http://www.nicd.us/