Since light such as visible light and near-infrared light can pass through clothes, in the case of a phototherapy device that emits visible light, near-infrared light, or the like, light can be irradiated to the affected area through clothes. Is possible. On the other hand, far-infrared rays hardly transmit when irradiated on clothes. For this reason, in the case of a far-infrared treatment apparatus, there exists a possibility that a therapeutic effect may change with the presence or absence of clothes. A treatment apparatus according to the present disclosure includes a heater that emits infrared rays, and a control unit that controls the heater. The control unit controls the heater according to an irradiation mode including a direct mode in which the infrared ray is directly applied to the affected part and an indirect mode in which the infrared ray is applied through clothing. [Selection] Figure 8【課題】可視光や近赤外線等の光は、衣服を透過することが可能であるため、可視光や近赤外線等を照射する光線治療装置の場合、衣服越しに光を患部に照射させることが可能である。これに対し、遠赤外線は、衣服に照射されると殆ど透過しない。このため、遠赤外線治療装置の場合、着衣の有無によって、治療効果が異なるおそれがある。【解決手段】本開示に係る治療装置は、赤外線を照射するヒータと、前記ヒータを制御する制御部とを備える。前記制御部は、患部に前記赤外線を直接照射する直接モードと、衣服越しに前記赤外線を照射する間接モードとを含む照射モードに応じて、前記ヒータを制御する。【選択図】図8