What is the most likely cause of this presentation?
Answer A. ChemotherapyThese multiple white lines on the fingernails, known as Beau's lines, correspond with chemotherapy cycles in this patient with gastric cancer. Cytotoxic chemotherapeutic agents can induce the temporary arrest of proliferative function of the nail matrix.
Chemotherapy
Hyperthyroidism
Nephrotic syndrome
Psoriasis
Miscellaneous