Many people hold a fixed perception that those suffering from mental illness cannot marry, and that marriages registered after the fact are necessarily revocable. However, the actual legal judgment is divided into two core standards, which are to comprehensively determine based on the parties' mental state at the time of registration and whether the illness was truthfully disclosed before marriage, and it is not universally revocable.

  The Civil Code clearly stipulates that marriage is invalid only in the case of bigamy, close relatives, and those who have not reached the legal age for marriage. Coerced marriage and the concealment of major diseases before marriage are considered revocable marriages, and mental illness no longer directly leads to the invalidation of marriage. Referencing the Maternal and Child Health Law, schizophrenia and manic-depressive severe mental illness are classified as major diseases under the law, while mild anxiety and common depression are not within the scope, and will not trigger the grounds for revocation.

  In the first scenario, the party's mental state is normal at the time of registration, with full ability to discern and express themselves, and they actively and truthfully disclose their medical history before marriage. After the other party is informed, they voluntarily register, and the marriage is legally valid, with no grounds for revocation. Even for patients with intermittent mental disorders, if they register autonomously and truthfully disclose their condition whileAwake, and the condition recurs after marriage, the other party can only file for divorce and has no right to apply for the revocation of the marriage.

  In the second scenario, one party is diagnosed with a severe mental illness before marriage but deliberately conceals it, and it is only discovered after marriage, which meets the requirements for a revocable marriage. The affected party has a legal obligation to disclose, and the act of concealment directly affects the other party's genuine intention to enter into marriage. The innocent party must file a lawsuit with the court to revoke the marriage within one year of learning of the concealment, which is a period of prescription. It is not subject to interruption or extension of time, and the right to revoke expires if not exercised within the period. The only way to terminate the relationship is through divorce. Once the marriage is revoked, it does not have the effect of a marriage from the beginning. The property during cohabitation is divided according to the consideration of the innocent party, and the innocent party may also claim compensation for damages.

  There are also special cases of defective legal effect that need to be distinguished. If the party is in a period of mental illness at the time of registration, completely loses the ability to discern, and is considered an incompetent person, they cannot make a genuine expression of intention to marry. Such a marriage is invalid due to the lack of voluntariness, and it is a completely different legal path from the revocable marriage due to the concealment of a disease, and should not be confused in handling.

  The judicial determination of the concealment of a severe mental illness requires complete evidence support, such as hospital records, medical treatment documents, medication records, and chat records. Simply informing of mild depression while deliberately concealing severe schizophrenia also constitutes concealment, and the court supports the claim for revocation; if the disease is diagnosed after marriage and there is no pre-marital concealment, the revocation procedure cannot be followed, and the only way to resolve the breakdown of feelings is through litigation for divorce.

  The foundation of marriage is voluntariness and sincerity. Mental illness patients do not lose the right to marry, and marriages entered into whileAwake and truthfully disclosing the condition are protected by law; only deliberate concealment of severe mental illness can grant the other party the relief channel to revoke the marriage. Clarifying the boundaries of invalid, revocable, and divorce can accurately protect one's marriage rights and avoid confusion in legal procedures that cause delays in rights protection.