Level of self trauma or injury also indicates the severity of the infestation. (dog-health-handbook.com)
Scabies normally results in a continuous itch where dogs will cause self trauma due to the severity of them constantly itching themselves; if Trisha is only occasionally itching herself the cause is unlikely to be scabies but is safe and easy to treat just in case and to rule it out. (wagwalking.com)
Pets present with various manifestations of self trauma from licking, biting or scratching at themselves. (blog.petmeds.com)