Self-injection tool includes a base and a shroud member. The base includes a proximal end, a distal end, and a barrel engagement portion. The barrel engagement portion defines a cavity to receive at least a portion a syringe barrel such that the distal end of a needle extends a first distance from the distal end of the base. The shroud member includes a proximal end and a distal end. The proximal end is movably coupled to the base. The shroud member is movable between a fully-extended position and a fully-retracted position. In the fully-extended position the shroud member is an extended distance from the distal end of the base. In the fully-retracted position the shroud member is a retracted distance from the distal end of the base. The extended distance is greater or equal to the first distance； the retracted distance is less than the first distance.
