This document discusses seasonal affective disorder (SAD), also known as winter depression or winter blues. It provides synonyms, classification, symptoms, causes, complications, diagnosis criteria, miasmatic analysis, rubrics for homeopathic treatment, and potential remedies. SAD is characterized by depression that occurs at a specific time of year, usually winter, and is related to lack of sunlight and serotonin levels. Symptoms include oversleeping, overeating carbohydrates, lack of energy, and withdrawal. It can potentially lead to depression, hopelessness, lack of pleasure, and in severe cases, suicidal thoughts. Homeopathic remedies mentioned for treatment include Phosphorus, Sulphur, Hepar sulph, Sil