Diagnosing depression involves evaluating a person’s symptoms based on specific medical guidelines. Mental health professionals commonly refer to the Diagnostic and Statistical Manual of Mental Disorders (DSM-5), which outlines the criteria for identifying depressive disorders. According to the DSM-5, a person must experience at least five symptoms during the same two-week period, and these symptoms must cause noticeable distress or impairment in daily functioning.

Among these five symptoms, at least one must be either a depressed mood or a loss of interest or pleasure in nearly all activities. Other symptoms can include changes in appetite or weight, difficulty sleeping or oversleeping, fatigue, feelings of worthlessness or excessive guilt, trouble concentrating, and recurrent thoughts of death or suicide.

It is important to note that these symptoms should not be the result of substance use, medications, or another medical condition. The duration and severity of symptoms are also crucial. Occasional sadness or tiredness alone does not qualify as depression unless the symptoms are persistent and interfere with a person’s ability to work, study, or maintain relationships.

Mental health professionals use interviews, questionnaires, and observation to make a reliable diagnosis. Self-diagnosis is discouraged because depression can resemble other conditions such as anxiety disorders, thyroid problems, or vitamin deficiencies.

Early identification and professional assessment are vital for effective treatment. Depression can be managed successfully through therapy, medication, lifestyle changes, and social support. Anyone who suspects they may be experiencing depressive symptoms should reach out to a healthcare provider or mental health specialist for evaluation and support.

In summary: A person must show at least five key signs, including either low mood or loss of interest, over a two-week period for a diagnosis of depression.