Mindplayers by Pat Cadigan
Allie Haas only did it for a dare - the kind of dare you know is a mistake but you do it anyway because it's Mistake Yime. But putting on the madcap that Jerry Wirerammer has 'borrowed' was a very big mistake. The psychosis itself was quite conventional, a few paranoid delusions, but it didn't go away when she took the madcap off. Jerry did the decent thing and left her at an emergency room for dry-cleaning but then the Brain Police took over. Straightened out by a professional mindplayer, Allie thinks she's left mind games behind for good but then comes the fazer: she can either go to jail as mind criminal or she can train as a mindplayer herself...