Signs of Male Post-Partum
While women often show signs of frank sadness when they are depressed, men may be more likely to be irritable, aggressive, and sometimes hostile when depressed, he says.

"The best thing for somebody to do when they notice signs of depression is to talk to a doctor, counselor, psychologist or social worker who can make an affirmative diagnosis that there is depression that needs to be treated," he suggests.

The new findings do not surprise New York City psychoanalyst and father Leon Hoffman, MD. Hoffman is also director of the Pacella Parent Child Center. "We see this very commonly," he tells WebMD. "It's very important for pediatricians to be on the lookout for signs of postpartum depression in men."

In addition to not interacting with their baby, a depressed dad can't be supportive of the mother, he says.