Prodromal phase or traits

Prodromal phase or traits are early, often vague, symptoms and changes in behavior, mood, or functioning that occur before the full onset of a disease or disorder. In bipolar disorder (BD), the prodromal phase can last months or years, characterized by subthreshold symptoms like mild anxiety, depression, irritability, or mood swings. This phase is crucial for early identification, as intervention during this time may reduce the severity of later, full-blown episodes. Also see: Bipolar Vulnerability and Diathesis. BD prodromal traits: 

• Subthreshold manic symptoms: Increased energy, irritability, or racing thoughts that don’t meet full mania criteria.
• Depression with cyclothymic features: Frequent, low-level mood swings.
• Physical/cognitive changes: Trouble sleeping, poor concentration, or distractibility.
• Increased risk factors: Often seen in individuals with a family history of the disorder.