Hi! Its a bit unusual for a depressive disorder to last for this long as mostly the disorder mostly remits after some time, though there are some depressive disorders which stay for this long. What is not clear is that whether the diagnosis of depression
was told to you by your husband or the psychiatrist
himself? In case the depression is not coming down, there are multitude of different treatment regimes which could benefit your husband. Folic acid
, a vitamin, can help to some extent. Exercise and meditation
surely have a documented benefit in resistant depression.
Hope it helps in solving your query.