Final answer:
Chloasma is a condition characterized by irregular hyperpigmentation on the face. It is commonly seen in pregnant women due to high estrogen levels and is often referred to as the 'mask of pregnancy.' The dark patches of chloasma can appear on the cheeks, forehead, and nose.
Step-by-step explanation:
The irregular hyperpigmentation of chloasma can be found on multiple areas of the face, including the cheeks, forehead, and nose. Chloasma is a condition characterized by the emergence of blotchy brown patches of skin on the face, often referred to as the 'mask of pregnancy.' It is commonly seen in pregnant women due to high estrogen levels. The dark patches may appear on different parts of the face, including the cheeks, forehead, and nose.