Irumodic Syndrome

Irumodic Syndrome is a condition that affects the brain, making the suffer loss of memory and other similar symptoms.

In Q's anti-time future, Jean-Luc Picard developed the disorder. (TNG: "All Good Things...")

In an alternate timeline, Picard also developed Irumodic Syndrome, although he continued to work on Project Phoenix. (DS9 novel series: Millennium)