There are several possibilities to be aware of when you have edema of the ectoderm of the penis: it may be caused by local inflammation of the penis, by allergic factors, or by hypoproteinemia. It is recommended that you must go to the hospital for an examination to find out what is causing the edema. The glans penis will cause the outer skin of the penis to become red and edematous, and there may be local pain, which will soon be relieved by local cleaning and keeping it dry. Pay attention to whether there is a relatively small penile foreskin mouth, the foreskin flip open, causing the foreskin can not be effectively returned, resulting in foreskin inlay edema. It may also be exposure to certain allergenic substances that cause allergic edema of the penis. Malnutrition in many people can also lead to edema of the ectoderm of the penis.