The American Academy of Family Physicians lists these common symptoms of winter-onset seasonal affective disorder:

• Appetite changes, particularly a desire for sweets and starches.
• Gaining weight.
• Sleeping too much.
• Lack of energy and a feeling of fatigue.
• Feeling irritable, anxious and having problems concentrating.
• Not wanting to participate in social activities and a general lack of interest in things you once enjoyed.
• Increased concern about being rejected socially.

Treatments are available for SAD. Talk with your doctor if you have these symptoms.