A dark spot on your palm might look harmless at first. You may assume it is simply a mole, a freckle, or a mark caused by everyday activity. But some unusual spots deserve closer attention.

A rare type of skin cancer called acral melanoma can develop on the palms, soles, or beneath the nails. Because these areas receive less sun exposure, changes there can sometimes be overlooked.

One warning sign is a new dark patch or spot that looks different from the others on your skin. It may be brown, black, or uneven in color, and its appearance can gradually change over time.

Pay attention to changes in size, shape, color, or borders. A spot that continues to grow, develops irregular edges, or looks noticeably different from surrounding marks should be checked by a healthcare professional.

Acral melanoma is uncommon, and most dark spots are not cancer. Still, unusual changes shouldn’t automatically be dismissed simply because they appear on the palm or another less-visible area.

Checking your skin regularly can help you notice changes earlier. Look at your palms, soles, fingers, and underneath your nails, especially if you develop a new or changing mark.

If you notice a suspicious spot, avoid trying to diagnose it yourself from photographs or internet searches. A dermatologist can examine it properly and determine whether further testing is necessary.

The message is simple: don’t panic over every dark spot, but don’t ignore one that is new or changing. Knowing what is normal for your skin makes it easier to recognize when something deserves professional attention.