Well, for the mentally ill, wouldn’t Limbo be the place for suicides? Just joking, Limbo as dogma was abandoned years ago.
Its all silly.
Sto Zvirat:
Limbo was never officially defined as Catholic Dogma. It was a srongly held theological position regarding the fate of unbaptized Children going back to the time of St. Augustine who was one its first proponents and thus since his time, it was a major theological opinion of the Church.
However, as the recent Catechism of the Catholic Church clearly states, the Church can’t definitively say anything about the fate of unbaptized Children as that was never really totally revealed by Christ. The Church thus trusts in the Mercy of God and prays for unbaptized children at the Liturgy [CCC 1261, see Link attached]
http://www.scborromeo.org/ccc/p2s2c1a1.htm#VI