Why Pale Areas Can Appear Within Postmortem Lividity

After death, blood settles in dependent areas and may produce a visible discoloration called lividity. Saukko and Knight describe how pressure against a supporting surface can compress small vessels and leave pale areas within the broader pattern.

For example, areas where the shoulders or calves press against a surface may remain paler than the adjacent skin. A report that describes pale and discolored areas gives the reader more context than a description of color alone. Body position and the supporting surface help explain the distribution.

Saukko and Knight, Knight’s Forensic Pathology, 3rd ed. (2004), p. 56