title: Letter: Thickened corneal nerves.
mesh_terms: D003315:Cornea / Q000294:innervation*; D003316:Corneal Diseases / Q000150:complications*; D006632:Histamine; D006801:Humans; D009378:Neoplasms, Multiple Primary / Q000150:complications*; D013577:Syndrome
chemical_list: D006632:Histamine