Thank you for the additional information.
A small amount of swelling of the hands or feet that is not associated with significant fluid retention is generally not worrisome. Signs of significant fluid retention could be pitting when pressing on the swollen extremity or weight gain from the accumulated fluid.
When there is not any significant fluid retention, swelling of the hands or feet could be related to being hot or it could be related to minor inflammation in the hands or feet.
I ask about medicines because the most common cause of significant fluid retention in a young adult is as a side effect to medicines, but since you are not having significant fluid retention, this is not an issue. Paxil is not a common cause of fluid retention, but this is not an issue for you.
At this point, it is reasonable to do general interventions
to help, such as restricting sodium intake, soaking the hands in cool or icy water, or trying an over the counter anti-inflammatory medicine.
If I can provide any further information, please let me know.