What causes Hyperpigmentation?
Hyperpigmentation in skin is caused by an increase in melanin - a substance of the body that is responsible for the pigment of our skin. Certain conditions can trigger Hyperpigmentation and it can occur through various stages in life.
The most common way to change skin pigmentation is through sun tanning, and exposure to sunlight which causes an increase in melanin. The opposite of Hyperpigmentation is the skin condition called Hypopigmentation, which is the reduction of melanin. Further skin classifications for this are Vitiligo and Albinism.
Hyperpigmentation can also be caused by antibiotics and various prescription drugs.