While checking out Status Conditions because of what I mentioned above I made a list of what Status Conditions can be healed naturally in Mystery Dungeon and how long it takes to heal, Sleep heals in 6 turns, Frozen lasts 4-5 turns, Paralyzed lasts 3 turns, Slowed (which slows a Pokemon movement speed) lasts 6-8 turns, Shadow Hold/Stuck (which prevents a Pokemon from moving, but doesn't affect Ghosts) lasts 2-5 turns, Petrified Last 21-30 turns or ends if they are interacted with, Wrapped, Constrictio, & 8 other similar moves (which prevents movements while dealing damage) last 0-6 turns, Telekinesis lasts 7 turns, Grounded (Allows Ground-type moves to effect Flying and Levitating Pokemon) lasts 10 turns, Cringe/Flinch (which prevents action) lasts 1 turn, Confused lasts 7-12 turns, Infatuation (which prevents action) lasts 6 turns, Cowering (prevents actions) lasts 11-12 turns, Whiffer (Cause all attacks to miss) lasts 2-6 turns, Taunted (can use damaging moves I.E can't use status and stat changing moves that don't damage) lasts 11 turns, Encore (same as core games) lasts 11 turns, Decoy (allies and eniemies are more likely to attack the Pokemon with Decoy) lasts 21-50 turns, Terrified (prevents move usage and will cause them to run from other Pokemon including allies) lasts 9+ turns, Powder (prevents Fire-type moves once and will damage the user when the move fails) lasts 11 turns, Embargo (prevents item usage) lasts 6 turns, Cursed (Pokemon loses 1/4th of their health the next turn and every 10 turns) lasts 4-5 turns, Leech Seed last 10-12 turns, Perish Song (which kills the Pokemon on the 3rd turn after use) lasts 4 turns (so Self-Curer will prevent death from Preish Song), Heal Block last 6 turns, Blinker (the Pokémon cannot see other Pokémon, items or the dungeon walls) lasts 11 turns, Cross-Eyed (Pokemon adn items will look like Substitutes) lasts 11 turns, and Gastro Acid (surpresses Abilities) lasts 21 turns.
Burning, Poisoned, Sealed (prevents the use of sealed moves), Exposed (Normal and Fighting-types can attack Ghosts), and Miracle Eye (Psychic-types can attack Dark-types) doesn't heal until they leave the floor so they don't heal naturally and Self-Curer doesn't speed up the healing.