raccoon butterflyfish (Chaetodon lunula); moon butterflyfish
Mongolian spot; Mongolian blue spot; congenital dermal melanocytosis
speckles; spotted pattern
senile plaque; neuritic plaque; senile druse
mottled; patchy; macular; porphyritic
pigmented macule; pigmented spot
chloasma; brown macule; brown spot; brown patch
water spot (e.g. dried on a dish after washing)
blind spot (on the retina)
cafe-au-lait spot (birthmark)