When it comes to new marks appearing anywhere on your skin, it can feel a bit disconcerting, right? Is it a wart? Is it a freckle? Perhaps, but it could also be dermatosis papulosa nigra (DPN), which ...

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There are a host of skin conditions that you can experience over your lifetime. Some are more common than others — like acne or contact dermatitis — but some can take a while to recognize. This is ...