1. A method for analyzing skin conditions associated with a subject, comprising: acquiring a first white-light image and a first UV image of at least a portion of a body surface of the subject at a portable image acquisition device, the first white-light and UV images including a plurality of pixels, the pixels in the first white-light image corresponding to respective pixels in the first UV image; sending the first white-light image and the first UV image to a computing device for analysis; and at the computing device, examining properties of pixels in at least the first white-light image to identify skin pixels in the first white-light and UV images; and obtaining results associated with at least one skin condition using information in the skin pixels in at least one of the first white-light and UV images.