Hi, Welcome to HCM Forum. You are getting recurrent painful veinous swelling from wrist to the elbow. It appears to be vericose veinswith partial patiency of valves that is why resolving in a time of few minutes.
I advise you to consult a general surgeon
or a vascular surgeon for diagnosis and treatment. you may have to go for colour doppler test along with other routine tests. Wishing for a quick recovery. Thanks for calling.