The present disclosure is directed to wearable phototherapy devices and more particularly, flexible, attachable, phototherapy devices for wound treatment at a skin surface of a user. The flexible devices include a flexible attachment strip configured to contact and secure the device to the skin surface, a moistening band attached to a bottom surface of the attachment strip and configured to contact the skin surface, and a light-emitting assembly including at least one organic light-emitting diode (OLED) and at least one emission modifier. The flexible device can further include one or more sensors disposed along the bottom surface of the flexible attachment strip, a near field communication (NFC) antenna, and a flexible printed circuit board (FBCB) including a communication microchip and a memory microchip connected to the flexible attachment strip such that the flexible device can provide remote medical treatment.