Last night I was watching TV and my foot (ankle bone) was resting on my leg for some time, and when I moved it there was a big dent there. I started pressing my finger on my leg and thumbprints appear and vanish after a bit. I am pretty sure this is edema, but I was wondering if there are other causes for this outside of the super scary stuff.... can being overweight or eating wrong foods cause this? I want to point out that I have to press really hard for the thumbprint to appear. My legs are not swollen or red or painful and this ONLY happens on the shin. I am over 50, but my BP is normal and my heart rate is normal. No shortness of breath. If anyone has had any experiences with this, please share. Thanks.