<unk>  is a type of major depressive<unk> , and sufferers may exhibit any of the associated symptoms, such as feelings of hopelessness and worthlessness, thoughts of suicide, loss of interest in activities, withdrawal from social interaction, sleep and appetite problems, difficulty with concentrating and making decisions, decreased libido, a lack of energy, or agitation. Symptoms of winter<unk>  often include falling asleep earlier or in less than 5 minutes in the evening, oversleeping or difficulty waking up in the morning, nausea, and a tendency to overeat, often with a craving for carbohydrates, which leads to weight gain.<unk>  is typically associated with winter depression, but springtime lethargy or other<unk>  mood patterns are not uncommon. Although each individual case is different, in contrast to winter<unk> , people who experience spring and summer depression may be more likely to show symptoms such as insomnia, decreased appetite and weight loss, and agitation or anxiety. Bipolar<unk>  With<unk>  pattern is a specifier for bipolar and related<unk> s, including bipolar I<unk>  and bipolar II<unk> . Most people with<unk>  experience major depressive<unk> , but as many as 20% may have a bipolar<unk> . It is important to distinguish between diagnoses because there are important treatment differences. In these cases, people who have the With<unk>  pattern specifier may experience a depressive episode either due to major depressive<unk>  or as part of bipolar<unk>  during the winter and remit in the summer. Around 25% of patients with bipolar<unk>  may present with a depressive<unk>  pattern, which is associated with bipolar II<unk> , rapid cycling, eating<unk> s, and more depressive episodes. Differences in biological sex display distinct clinical characteristics associated to<unk>  pattern: males present with more Bipolar II<unk>  and a higher number of depressive episodes, and females with rapid cycling and eating<unk> s.
Seasonal affective disorder
Major depressive episode
Major depressive disorder
Depression 
Late life depression
Premenstrual syndrome
Secondary mania
Postpartum depression