Is possible get self bleeding (debuff) in this game? | Scythe axe or dagger?

[Anoidi]

Recently I killed the mantis and made his armor and weapon (Assassin's Armor and Scythe of Blossoms), but sometimes when I try do slain any mobs I just start to bleeding till my death.
does anyone know why this happens?

And this Scythe is what kind of weapon? the game says that is an axe but I unlocked daggers mutation using that.