Applicator devices (1), kits, systems, and methods of using such devices for treating one or more body surface conditions (e.g., warts, Molluscum contagiosum, conjunctivitis, otitis) are provided. The applicator device facilitate topical administration of a controllable amount of a pharmaceutical composition to a desired area of an affected body surface (e.g., skin, eye, ear, nose, mouth, anus, vagina). The applicator device includes an ampule (60) containing the pharmaceutical composition, the ampule being positioned within a tube (50). Squeezing the tube breaks the ampule, releasing the pharmaceutical composition. The applicator device includes a filter (30) that permits passage of fluid and inhibits passage of broken ampule shards. The applicator device includes a dispensing tip (20) through which the pharmaceutical composition pass.
