Mees’ Lines are a change that occurs in the color of the nail with no palpable ridges, typically described as white bands traversing the nail bed, running parallel to the lunula across the entire nail bed of the individual. This finding is indicative of arsenic [5], thallium [6], or other heavy metal poisoning.

What do Mees lines indicate?

Mees’ lines appear after an episode of poisoning with arsenic, thallium or other heavy metals or selenium, opioid MT-45, and can also appear if the subject is suffering from kidney failure. They have been observed in chemotherapy patients.

What causes Mees lines on fingernails?

Mees’ lines (also known as Aldrich or Reynolds’ lines) are transverse white bands on the nail plate laid down during periods of stress. Common associations are poisioning (arsenic, thallium, fluorosis), severe infection, renal disease, cardiac failure, and malignant disease.