What are types of congestion?

Passive (due to circulatory mechanism (stasis), like venous stasis/ hepatic stasis) Active (during inflammation, increased arterial blood supply by vasodilation of arterioles of microcirculation, local redness and warmth, we see increased weight of organs, observed by reflex nervous mechanism by adaptation during increased functional stress or initial phase of inflammation) Regardless of type it is associated with edema.