Table Differentiating Cellulitis and Deep Venous Thrombosis Feature Cellulitis Deep Venous Thrombosis Skin temperature Warm Normal or warm (rarely cool unless limb ischemia present due to extensive venous disease causing arterial insufficiency) Skin color Erythematous Normal or erythematous but blanchable (infrequently cyanotic) Skin surface Peau d'orange Smooth Lymphangitis and regional lymphadenopathy Frequent Nonexistent Most cellulitis is nonpurulent.