I think it's always better to have peace of mind and be safe rather than sorry.
Trixie has a small spot on the top of her head where the fur is darker in color than the rest of her head and shorter too......I showed her vet today since I only noticed it since she was groomed and the vet thought that it could just be a spot of darker hair coming in or that maybe the groomer put her topknot in too tight and caused some damage to the area. I explained to her that the bow was only in a short while, but she said is was still possible. Ugh....more to worry about