There are a number of potential symptoms for hyperpigmentation. Some of these symptoms include birthmarks, darkening of the skin especially around the birthmarks.

Fixed drug reaction.

There are so many benign causes for hyperpigmentation that it's hard to imagine a situation in which skin coloration would cause a failure of a medical exam.

There are hyperpigmentation creams that specifically target the different colored cells. For more serious cases, surgery is an option for treatment. For lighter scarring there are simple scarring creams available.

For a quick fix one can use cosmetics to cover the affected area. There are several topical creams for long-term treatments on hyperpigmentation that are both over the counter and by prescription. However some causes of hyperpigmentation due to skin damage or scaring may be treated on there own, it may take the skin time to repayment.