You are the medical officer doing free medical check up for a company dealing with large amount of lead. Which of the following medical conditions in a job applicant would not be desirable in this specific scenario?

Bladder disease is undesirable in dye industry along with skin diseases and precancerous lesions. History of nephritis would also be undesirable in an employee who comes into contact with lead on daily basis. Ref: Park's Textbook of Preventive Medicine, 20th Edition, Pages 712-13.