So about 3 months ago, a brown spot shiwed up on my stomach, and ever since, more have showed up, on my inner/upper thighs, they are a sort of lightbrownish color, and they are of different sizes, however they are aĺl very round. From what I understand, it could be a symptom of diabetes or prostate cancer. They don't itch, so I've ruled out fungus. They feel like velvet when I touch them, and they are softer than my normal skin.