Sentence:  Mr. A. , her fellow townsman , also experienced a nervous breakdown just as soon as he discovered that he had been bilked of his life savings by the limited practitioner who had been treating his wife - a woman suffering from an incurable <WSD>disease</WSD> , multiple sclerosis - and himself . 
Meaning of the word marked with <WSD> tags:  an impairment of health or a condition of abnormal functioning