1) as defined by Futurist Alvin Toffler, who coined the term in 1965: the dizzying disorientation brought on by the premature arrival of the future.
2) the malady of ceaseless change; a (still) largely unrecognized psycho-sociological disorder, now a public health crisis affecting untold millions (or it is billions?).
3) analogous to culture shock, profound psychological distress caused by total immersion in a wholly unfamilar culture that happens to be one’s own.
4) the inability to cope when forced to constantly adapt to ever-changing circumstances that one cannot escape from.
5) symptoms include: listlessness, loss of appetite, weight gain, headaches, inexplicable pain, irritable bowel, general irritability, jitters, cold sweats, panic attacks, night terrors, fevered dreams, insomnia, disquiet, despair, depression, distrust, denial, the desire to withdraw from the world, infantilism, fatalism, fatigue, loss of direction, a feeling of drowning, bouts of nostalgia, heightened religiosity and/or patriotic fervour, public outbursts, self-indulgence, magical thinking, paranoia, delusions, paranoid delusions, hyperactivity, hyper-reactivity, increased impulsivity, violent outburts, fits of rage, fear of Others, susceptibility to conspiracy theories, the stockpiling of canned goods and ammunition, anti-socially-irresponsible and/or self-destructive behavior, compulsive masturbation, and the constant need to go shopping. (Note this may not be a complete list.)