Beau’s lines

Beau’s lines

Horizontal grooves on the fingernails which arise when the nails stop growing due to poor health, first described by Joseph Beau in 1846.

Aetiology
Local infection, trauma or psoriasis; systemic disease—e.g., coronary artery occlusion, hypocalcaemia, diabetes, malnutrition; drugs—e.g., beta-blockers, chemotherapy.