Nevus Oligemicus Watchlist (log in to enable) Retrieved 2021-01-18 Source Wikipedia Trials — Genes — Drugs — Interested in hearing about new therapies? Registered! Nevus oligemicus presents as a patch of livid skin that is cooler than the normal skin, as a result of decreased blood flow, in which vasoconstriction of deep vessels is thought to be the underlying defect. See also List of cutaneous conditions