MANILA — President Rodrigo Duterte will cut short a trip to Japan and return to the Philippines because of “unbearable pain” from a motorcycle accident last week, his spokesman said on Tuesday.

Mr. Duterte, who flew to Japan on Monday to attend an enthronement ceremony for Emperor Naruhito, is expected to come home on Tuesday night instead of Wednesday as planned, said the spokesman, Salvador Panelo. He said the president was experiencing “unbearable pain in his spinal column near the pelvic bone as a consequence of his fall during his motorcycle ride.”

Mr. Duterte, 74, will miss an imperial banquet, which his daughter, Sara Duterte-Carpio, will attend in his place, Mr. Panelo said. He said the president would consult his neurologist on Wednesday.

Mr. Duterte’s aides announced on Thursday that he had stumbled off his motorcycle after parking it, following a ride around his security staff’s compound. Mr. Panelo said the president had fallen while reaching for his shoe, and that he had sustained “light bruises and minor scratches.”