I'm in my late 30&..

A bunch of new moles, skin-tags, freckles, and "patches" of pigment have suddenly appeared on my body.

I'm not disfigured or anything...but *I* certainly notice the changes!

How normal is it to suddenly realize that your skin has transformed itself and become covered in new spots?

It's weired.

Probably just a result of getting older...

I'm not sure how much of this is aging and how much is a result of overexposure to the sun. I myself over the last year have had patches come up, and I was a fanatic for a good tan.

sun damage but if you are concerned go to the doctor and let them take a look

Go see a skin dr, have you been exposed to alot of sun????

yes now a days the Peri menopausal changes takes place in early 30's dot worry even the pollution also effects the skin .go for lot of greens and water baby.the only way to good healthy skin is aerobic exercise