Normal scars are lumpy for the first 3-4 months, red for 12 months, and take up to 18 months to fully mature. As the scar develops, it contracts and the redness recedes to become pale and inconspicuous.
Hypertrophic scars are red, raised, itchy or painful. These develop in areas of high mobility or strain, such as on the shoulders, chest or back. They can show mild improvement with time.
Keloid scars grow beyond the original wound or incision and lead to a firm, thick, red or raised scar which may be tender or itchy. Those with burns, injuries from a young age, or some racial groups are more likely to develop keloid scars which commonly occur on the ears, shoulders, trunk, or between the breasts.
Scar contractures are bands that form a web across a joint or body region. These restrict movement and can form around the face, neck, armpit, elbow, wrist, hand, fingers, groin, knee, ankle and toes.