Hi,
Welcome To HCM & Thanks For Asking Your Query Here
There are variety of medical conditions which may cause
Swollen ankle and and it may be simply due to prolong sitting or standing. or it may be related to underlying medical condition including
Lymphedema , Venous diseases , Infection , Blood clot, It may also be an indication of Heart, liver, or
kidney diseases
if ur husband is taking any medications than swollen ankles can also be a side effect of Medicines like Calcium channel blockers ,
Steroids ,Antidepressants and
Diabetes medications
it needs thorough medical check up and investigations to spot a confirm diagnosis
to help himself he can Get regular exercise, and lose weight if he need to, When sitting in one position for a long time, stretch his legs and move around every couple of hours.
Support hose, which you can buy at drugstores, also promote good circulation ,And consider cutting his salt intake to a teaspoon or less daily, which helps reduce water retention.
If none of these remedies seems to help i would strongly suggest you to see Your GP to rule out any underlying medical condition
I hope it help
Thanks & Get well Soon