What condition is characterized by flaking of the nails due to exposure to hot water or harsh chemicals?

The condition characterized by flaking of the nails due to exposure to hot water or harsh chemicals is lamella dystrophy. This condition affects the structural integrity of the nail plate, leading to splits and flakes as a result of environmental stressors. Hot water and harsh chemicals can compromise the adhesion between the layers of the nail, causing the nail plate to become brittle and delaminate.

Lamella dystrophy is often observed in individuals who frequently expose their nails to such conditions, including those who work in industries involving water or chemicals, or personal habits that include frequent soaking of nails. It is essential to ensure proper care and protective measures, like wearing gloves when using harsh products or long-term exposure to water, to help maintain nail health.

Other conditions mentioned do not specifically relate to the flaking caused by such exposure. For example, onychatrophia refers to nail atrophy or wasting, onychogryphosis signifies thickened, curved nails, and onychophagy involves nail biting. Each of these conditions has distinct characteristics and causes that do not include flaking due to environmental factors.