Thailand’s Princess Bajrakitiyabha Suffers Uncontrollable Abdominal Infection, Palace Says

Thailand’s Bureau of the Royal Household said Princess Bajrakitiyabha Mahidol, who has remained in a coma since 2022, is now suffering from an abdominal infection and inflammation in her large intestine.

“The royal medical team is closely monitoring the health of Her Royal Highness Princess Bajrakitiyabha Narendiradebyavati due to a severe infection that remains uncontrolled, affecting the function of several major organ systems, the Royal Household Bureau said in a statement on Thursday”

Bangkok Post

The palace added that she is experiencing “unstable vital signs, low blood pressure, irregular heartbeat and abnormal blood coagulation,” and said her condition has “continued to deteriorate” as the infection has “affected other organs.”

Bangkok Post

The reports tie the latest decline to complications that began after doctors detected a stomach infection in April, which led to inflammation in her intestines and a dangerous drop in blood pressure.

She has continued to rely on medical equipment to support the function of her lungs and kidneys, and the palace said the infection has become “uncontrollable.”

The latest update was issued on May 21, 2026, as the Bureau of the Royal Household described the princess’s health condition as having deteriorated and said her infection remains uncontrolled.

The Bangkok Post said the royal medical team is closely monitoring her health, noting that in April 2026 doctors detected an abdominal infection caused by inflammation of the large intestine and that it made her condition unstable with low blood pressure, irregular heartbeat and abnormal blood clotting.

blue News

In parallel, the People report said attention has increasingly turned to the King’s youngest son, Prince Dipangkorn Rasmijoti, 21, as a possible future heir, while the Straits Times noted that succession rules favor men and the 73-year-old king has not announced his chosen heir.

The Straits Times also said the princess is the 47-year-old king’s eldest daughter and has remained in hospital since December 2022 after collapsing during a military dog training session, with her lung and kidney functions supported by medical devices and medication.

The palace and multiple outlets describe ongoing treatment that includes medication and medical devices supporting her lungs and kidneys, alongside monitoring by doctors as her condition continues to deteriorate.

“Monarchy: The princess who is expected to be Thailand's future queen has been in a vegetative state since 2022 and is experiencing a worrying deterioration”

El Mundo

The Town & Country Magazine report quoted the palace saying, “The medical team continues to provide full treatment and closely monitor” the princess, while Reuters’ framing in the same piece said “She has been given medicine and medical devices have been deployed to support her lungs and kidneys.”

Town & Country also states that the princess is “not expected to recover,” and that her illness and coma have “thrown” the Thai royal family into a succession crisis because the 73-year-old king has yet to announce his heir.

People adds that Princess Bha has been hospitalized and in a coma since December 2022 after collapsing from a heart condition while training dogs at the Military Dog Training Ground in Pak Chong District, and that the palace said her now “uncontrollable” infection has “affected other organs.”