Left hand, cm rule, 6 hours after Cimex feeding

6 hours after feeding 2 adults and 30 bed bug nymphs. Initially bite sites were raised bumps and somewhat itchy. Within 30 minutes swelling subsides, itching stops, but small red dots left where bed bugs had been feeding. No difference in size of bumps left by feeding nymphs vs. adult bugs. Large red blotches on lower right at thumb base and along lower wrist are birth marks (port-wine stain or naevus flammeus), not bed-bug related.