There can be two reasons for swollen feet: the first is the result of a blow or injury, and the second is water stagnating in the flesh of the foot. Foot swelling can occur at any age. In addition to the above-mentioned reasons, there are many others that cause swollen feet: poor circulation, malnutrition, filariasis and intolerance to other medications. Swollen feet should always be treated by a doctor. Swelling can also be the result of other illnesses such as varicose veins, kidney disease, heart disease...