A 22-year-old male reports experiencing feelings of sadness, a lack of interest in activities he usually enjoys, and difficulty concentrating at school in the late fall and winter for the past two years. His mood and energy return to normal in the spring and summer. What's the most likely diagnosis, and what are possible treatment options?
The patient's symptoms are indicative of Seasonal Affective Disorder (SAD). SAD is a type of depression that is linked to seasonal changes, most commonly occurring in the fall and winter months. Potential treatments include light therapy, psychotherapy, and possibly antidepressant medication. Regular exercise and maintaining a healthy diet can also help manage symptoms.