Injuries are the result of a failed health stat in the event that a confrontation between your dragon and another ARPG character went poorly. They can be obtained through battles and certain high-level activities, like skillwork or journeying.
If your dragon is injured, they will need to heal before they can do things requiring stat gates again- sparring, battles, high level journeying and skillwork, training, etc. There are several ways that you can go about this.
Magical healing is, essentially, a quest. You must write or draw an entry of your dragon traveling to find a magical healer and having their injuries fixed.
Literature entries should be 800 words or more. Art should be full-body and shaded.
Using Skillwork, you can craft tools or potions to treat your injuries. These will be consumables, and will be used. You do not necessarily need to create an entry to do this.
Resting and Recuperating is essentially the passive version of healing. If you have waited one full month between the event that injured your dragon, you can engage in activities requiring stat gates once again.