Can you explain about the common signs of depression?

Signs Of Depression. A depressed mood and/or loss of interest in pleasurable activities must be present. Physical symptoms include weight gain or loss, insomnia or hypersomnia, psychomotor retardation or agitation, and lack of energy. Psychological/cognitive symptoms: excessive guilt, impaired concentration/attention, and thoughts of suicide. Based on these criteria see your pmd if you think you might be depressed.
Feelings & function. Intense and exaggerated feelings at times overwhelm functions to the point where almost all daily activities are affected adversely. Most common are sadness, tearfulness, lack of energy and motivation and abnormal sleep and eating patterns. A sense of impending doom or deep hopeless helpless feelings may lead to suicidal ideation. A loss of joy and inability to like what we once loved is obvious.