Table 3. The definitions of terms used in the patient and observer scar assessment scale.

Category	Definition
Vascularity	Presence of vessels in scar tissue assessed by the amount of redness, tested by the amount of blood return after blanching with a slide glass
Pigmentation	Brownish coloration of the scar by pigment (melanin); apply slide glass to the skin with moderate pressure to eliminate the effect of vascularity
Thickness	Average distance between the subcutical-dermal border and the epidermal surface of the scar
Relief	The extent to which surface irregularities are present
Pliability	Suppleness of the scar tested by wrinkling the scar between the thumb and index finger
Surface area	Surface area of the scar in relation to the original wound area