WASHINGTON HEIGHTS — Police are searching for a woman who allegedly punched a man in the head after he asked her to quiet a screaming child she had brought onto the subway.

It happened shortly after 3 p.m. Thursday near the 207 Street station, police said.

And it all started when a woman, possibly in her mid-20s, boarded an A train with a screaming child. A 65-year-old man already on the train asked the woman to have the child be quiet, police said.

That’s when the woman “became irate,” according to police, and began cursing at the man. Then she punched him in the head and exited the train at the next stop — 168th Street.

The victim refused medical attention. Police described his attacker as a Hispanic female in her 20s, 5 feet 8 inches tall and about 250 pounds.

A witness on the train captured video of her yelling at the older man. Police released that video Friday night asking for the public’s help to identify her.

Anyone with information in the case is urged to call the NYPD’s Crime Stoppers Hotline at 800-577-TIPS.