Why is it that one week after cheek implant surgery, the swelling appears to be more pronounced at night?

Hi, The swelling is more evident at nights because your body stays in a more flat position (since you lay down) the edema collects and stays more on your face. The other possible reason is related with your body's diurnal rhythm which regulates the excretion of certain body hormones and steroids which causes more fluid retention at nights.