Status Effects are problems that Pokemon can recive in the video games, during battle. See them below:
Paralysis
A Pokémon suffering from paralysis may not attack in a given turn, also this slows a Pokémon down. It can be cured with Paralyze Heal. It can also be healed with a Cheri Berry
Sleep
Sleeping Pokémon cannot attack, but they can do moves like Snore and Sleep Talk. It can be cured with Awakening. The move Rest can makes the user sleep, but it heals their HP.
Burn
Burned Pokémon are dealt damage each turn, in addition to taking a Attack penalty. Fire type Pokémon cannot get burned, however. A pokemon who has a Synchronize abillity can pass the status effect to the pokemon that gave the status effect.
Confused
Once confused, a Pokémon will remain so for 1 to 4 turns, and during those turns have a 50% change of damaging themselves and being unable to perform any other action for that turn. This status effect can be used even if a Pokemon has another, like Paralysis, or Burn, but can be healed be switching out the confused Pokémon.
Frozen
A frozen Pokémon cannot attack, but it can thaw out in a few turns, fire type attacks can thaw out a Pokémon frozen more easily. Also moves like Flame Wheel, Flare Blitz and Sacred Fire can be used even if the user Pokémon is frozen, and they thaw out. Ice type Pokémon cannot be frozen, however.
Badly Poisoned
A badly poisoned Pokémon is damaged every turn, but this damage increases over time. After a battle is over, the poisoned Pokémon will take damage (1 HP of damage for each 4 steps). Poison, Ground, and Steel type Pokémon cannot be poisoned, however.
Attracted
Your Pokemon becomes infatuated with the opponent (who must be of an opposing gender), and is under a condition similar to confusion.