that is how mine itch started out - occassional itch - almost like dandruff - scratched so much my itch turned to lumps, then bumps, then bumps filled with white puss, then i was diagnosed with hsv 2, then mrsa, and i have eczema. you might want to go to the dr.
Yes, it could easily be dry skin, or maybe a mild fungal infection.
You can check with your doctor to make the diagnosis.
AJ