We have investigated the spin accumulation effect in a Bloch-type magnetic domain wall in the presence of the Rashba spin-orbit
interaction. The investigation has been done to study the excess voltage drop due to spin accumulation across the domain wall using the
kinetic equation in Wigner space. It has been demonstrated that the Rashba interaction extremely increases the spin accumulation effect
in the domain wall which in turn results in up to two orders of magnitude enhancement in the excess voltage drop.