Edema which is also known as swelling in some countries is very common among 
people with Chronic Kidney Disease (CKD).
Edema means there are excessive fluid in the gap of the tissues outside the 
blood vessels. It is a pathological process and the fluid comes from blood. Many 
reasons can cause edema and according to the causes, edema can be divided into 
cardiac edema, renal edema, hepatic edema, nutritional edema, allergic edema, 
endocrine edema, edema caused by connective tissue disease, idiopathic edema and 
many others.(Swelling and Kidney Disease)
Renal edema refers to the edema caused by renal dysfunction. Edema appearing 
in Chronic Kidney Disease generally is resulted from two kinds of situations. 
The first one is that glomerular filtration function decreases, but reabsorption 
function of renal tubule still keeps normal. At that time, on one hand, the 
excessive fluid can not be filtered out; on the other hand, most of the filtered 
fluid is reabsorbed by renal tubule. As a result, most of the fluids are kept in 
the body, which is manifested as edema. Another situation is that large amount 
of protein are lost along with the urine. in terms of people with Chronic Kidney 
Disease, their kidneys are damaged and can not stop protein from being leaked. 
Consequently, large amount of protein get out of our body. Protein exists in the 
blood, and reducing of protein will cause the decrease of solute concentration, 
leading to the imbalance between the inside and outside of the blood vessels. To 
keep balance between them, much more fluid in the blood vessels will ooze and 
then get into the gap among tissues. Finally, edema appears.
Edema caused by Chronic Kidney Disease usually appears in the loose tissues 
firstly such as the eyelids, face and ankles. It is more obvious in the morning 
and then relieved in the noon or afternoon. In serious cases, edema can appear 
in the whole body.
Although edema is one of the common symptoms of Chronic Kidney Disease, it 
does not always kidney disease. Therefore, once you suffer from edema, you 
should go to hospital to do examination to find out the root causes of it. 
Moreover, caused by Chronic Kidney Disease also can affect its sufferers’ 
appetite by making them vomit, so treating edema is also essential for sufferers 
from kidney disease. for more information, please email to me or consult our 
consultant online.
