Under Section 27(1)(e) of the Special Marriage Act, 1954, divorce may be sought where respondent is:

Section 27(1)(e) allows divorce where the respondent "has been incurably of unsound mind, or has been suffering continuously or intermittently from mental disorder" of such a kind and extent that the petitioner cannot reasonably be expected to live with the respondent. Physical illness or disability is not a ground, and leprosy was removed as a ground by the Personal Laws (Amendment) Act, 2019.