Dementia 13 was a horror and weird fiction sine by Pam Creais.
Subtitled "An Illustrated Journal of the Arcane & Macabre", Dementia 13 was published in the 1990s in Sidcup, Kent, in the UK. It featured fiction, articles, interviews, illustrations, and letters of comment.
Contributors of fiction included Neal Asher, Martin Blake, Daniel Buck, Rick Cadger, Simon Clark, Philip J. Cockburn, Philip Holmes, P.F. Jeffery, Alexander Johnson, Kirk S. King, Joel Lane, D.F. Lewis, David Logan (Grotesque), Roderick MacDonald, Dan McGee, Anthony North, Paul Pinn, Mark Samuels, William Smith, Bill Thompkins, Ian Westbrook, Conrad Williams, and Paul Worts.
Articles were by Mike Philbin (as Hertzan Chimera). among others.
Illustrations were by P.J. Creais, Kerry Earl, Dom Ganzelli, Dallas Goffin, Steve Lines, Rik, and Roddy Williams.
Also featured were interviews with writers such as Ramsey Campbell, and Simon Clark.
Letters came from Mark Samuels, among others.