It could mean a reaction to the medication or a reaction to something else. When did you start taking the medication?

Have you changed anything in your life, like soaps, detergents, etc?

If it gets worse or you develop respiratory problems you need to seek immediate help. Allergic reactions, if that's what this is, can get progressively worse.

Depending on if you changed anything recently, you might not have to stop taking your medication. Which anti-depressant are you taking? Are you taking any other medications?