I am not 100% that that is what is wrong. Gout can be caused from too much protein in the diet. If there has not been excess protein, then there could be something else going on with the kidneys. Edema can cause swelling also, but it is more common in the neck area. Edema is excess fluid in the tissues. If he is falling, then he could also be in pain from the swelling because it hurts to grip.