Potpartum depression, also called postnatal depression, is a type of clinical depression which can affect both sexes after childbirth.
Symptoms may include sadness, low energy, changes in sleeping and eating patterns, reduced desire for sex, crying episodes, anxiety, and irritability.
The 26-year-old "Nashville" star has checked into a facility for the treatment, reported Female First.
"Hayden is voluntarily seeking professional help at a treatment centre as she is currently battling postpartum depression. She asks that the media respect her privacy during this time," the spokesperson said.