Hyperpigmentation is when certain areas of the skin are darkened due to the overproduction of a pigment called melanin. This is a common condition and can affect any area of the body, including the face and hands.
There are many possible causes of hyperpigmentation and often it’s either due to overexposure to the sun or your individual genetic make-up. Certain medications and changes to hormones can also have an effect on whether or not it develops. It’s important to remember that although hyperpigmentation is not generally harmful, you should speak to a doctor if the dark spots change or become itchy and painful.