An FDNY medical technician had to be admitted himself after getting bitten by an emotionally disturbed man in a hospital-bound ambulance, according to fire officials.

The 20-year-old was responding to a medical emergency at East 175th Street and Jerome Avenue in the Bronx just before 11 p.m. Friday when he was attacked by a handcuffed patient, authorities said.

When he was cuffed by police, Thomas Wright, 32, allegedly lost his temper and sunk his teeth into the first responder’s left shoulder, cops said.

The FDNY takes assaults of this kind very seriously, officials stressed.

“Since June 2018, all FDNY ambulances have signs prominently displayed in multiple locations promoting strong penalties for assaults against EMS personnel,” FDNY Commissioner Daniel Nigo said in a statement.

Assaulting an FDNY Paramedic and EMT is a felony punishable by up to seven years in prison.

Wright is facing three counts of assault and harassment, police said.