To solve the problem that a treatment is extremely hard for a patient living alone without a family, etc., concerning correct external application for a skin disease in a back part though the external application of a drug is actually left to the patient himself/herself since the application of the drug for external use is the core element of the treatment in a dermatological clinical case.

The tool for applying drug for external use includes; a handle part at one end of an arm; and a drug holding part positioned at the opposite end part via the arm. When outer pressure is acted to the side surface or tail part of a container for drug for external use, the drug for external use is squeezed from the container, so as to be applied onto the skin of an affected area.