(Concern) As the sunlight gets stronger, I'm worried about skin issues.

I have been wearing a mask continuously during winter, but lately I haven't been wearing it. However, as the sunlight becomes stronger in the afternoon, I am worried because something is appearing on my face. It looks like hives or a rash, and it might be a sun allergy. It doesn't itch much, but I'm concerned it might get worse. Should I see a dermatologist? Or should I apply sunscreen more frequently?