Sometimes i get little dry spots on the side of my breasts & thigh here & there. why is this? ik i have dry skin i keep it moisturized

Eczema: Eczema or contact dermatitis. If the spots are where some article of clothing rubs then that could be the cause. If not, then use Hydrocortisone 1% cream three times a day on the dry spots as needed. If you moisturize with a lotion twice a day all over, then advance to a cream twice a day or an ointment like, vaseline or aquaphor. That is just the way eczema acts.