Ask AI: What causes coarse facial features.

Coarse facial features can be caused by many things, such as genetics, certain medical conditions, and aging. Genetic causes include certain inherited conditions, such as Down syndrome, Noonan syndrome, and Crouzon syndrome. Medical conditions, such as acromegaly, can also lead to coarsening of the facial features due to an increase in growth hormone production. Environmental factors, such as exposure to certain toxins, can also cause facial features to become more coarse. Lastly, aging can lead to the breakdown of collagen and elastin, which can cause the facial features to become more coarse and craggy as the skin loses its elasticity.