Idiopathic capillary leak syndrome
is a systemic disorder not confined to feet alone.
In your case it may be gravitational selling usually due to keeping the feet hanging for long.
The remedy is elastic compression bandage after raising the feet above body level for atleast 15 minutes and then wrapping the bandage from toe upwards to the ankle.
you should frequently raise or rest your feet in a body level table or chair 10 minutes every hour.
Laboratory Diagnosis with help of blood and urine samples for diagnosis
• Increase in IgM concentration • Decrease in serum albumin
• Decrease in serum IgG
,C3, and C4.