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Anger or hostility

Some men manifest depression by being hostile, angry, or aggressive, says. Dr. Sussman. "A man who realizes something is wrong may need to compensate by demonstrating that he is still strong or capable," he says.

Anger and hostility are different than irritability. "Anger tends to be a stronger emotion," Klapow says. "Irritability is a crankiness."

Dr. Sussman says he's also seen men become hostile when they have withdrawn as a result of their depression and feel under pressure by friends or family to rejoin society.

Next: Stress