Detailed answer

Hyperpigmentation refers to the darkening of patches of skin, commonly caused by excessive melanin production. While oral cancer may present various symptoms such as persistent mouth sores, bleeding, difficulty swallowing, or a lump in the mouth or throat, hyperpigmentation is not typically associated with oral cancer. If you are experiencing hyperpigmentation, it is advisable to consult a dermatologist or skincare professional to determine the underlying cause and appropriate course of treatment.