Dogs that are afflicted with ear mites will typically scratch at the ears excessively and shake their heads, even pulling out their own hair as they scratch. Some dogs will shake their heads so much that an hematoma of the ear will form (with blood pooling in the ear due to breakage of a blood vessel). Also a concern is when dogs will scratch at their ears to the point that damage is done to the ear canals or ear drums.
The hypertrophic scar is defined as a widened or unsightly scar that does not extend beyond the original boundaries of the wound. Unlike keloids, the hypertrophic scar reaches a certain size and subsequently stabilizes or regresses.
This can be dependant on the nature of the scarâs cause, however, and can take upwards of a year. Causes. Speaking literally, hypertrophic scars are caused by injury, as with most scars. Common injuries or occurrences that may result in hypertrophic scars are body piercings, burns, cuts or even pimples.