Hypertrophic scars appear as raised, wide, firm, and red to purple-colored scars that remain within the margins of the original skin injury. They are more likely to occur in wounds that cross natural lines of skin tension or an original open wound that healed on its own. These can cause some itching and discomfort to the touch but  these symptoms usually go away as the scar matures (12 - 18 months) Eventually, the hypertrophic scar fades in color but still remains prominent.