The Story: A young couple I have treated for some time came into my office recently. Lisa was angry with Justin because he had been (in her opinion) distant and unloving towards her in recent weeks. No matter how hard she tried to please him, nothing seemed to work, and she began to wonder whether he had lost interest in her. After I asked Justin certain key questions, it became clear that he had gradually become depressed and, in doing so, had lost interest in pretty much everything that had previously given him pleasure – including Lisa. Once Justin’s depression was adequately treated, he became the warm, loving and attentive man with whom Lisa had fallen in love and chosen to spend her life with. There are some important lessons to this story. First, depression is not always obvious. It can masquerade as something else (in this case, lack of interest in your partner). Second, it is valuable for friends or loved ones to learn the tell-tale signs of depression so that t...