Patients with swollen fingers who have a clear history of trauma, such as reflexive use of the hand for support and support at the time of trauma.
Or, in the case of crush injuries to the hand, local lymphatic and venous return is obstructed and capillary wall permeability increases, causing excessive fluid accumulation in the local tissue spaces, which manifests as swelling of the hand. In the absence of a clear history of trauma, it is important to suspect that it is caused by cardiogenic, hepatic or nephrogenic factors that lead to water and sodium retention and increased capillary filtration pressure.