"Blood tests show he has an infection and his liver is working irregularly".
Thai stocks have been unsteady since a Sunday night palace statement suggested that King Bhumibol's health had worsened. Many held aloft portraits of the king and were moved to tears by a week of grim news.
"Millions of Thais are sending him support, praying for him and wanting him to get well soon", she told AFP. It had been down 2.6 percent at midday.
Wanna Sirikhet, a 69-year-old woman from southern Narathiwat province, travelled more than 1100 kilometres to the hospital after learning about king's health and the "wear pink for his majesty" campaign on social media. Because Bhumibol, who turns 89 on December 5, has been king since 1946, there is great concern about his eventual succession by Crown Prince Vajiralongkorn, who has not earned the same respect as his father.
Thai media travelling with Prime Minister Prayut Chan-O-Cha in the eastern province of Chonburi said the junta chief had cancelled all official engagements Wednesday afternoon and returned to the capital.
Thailand's strict lese majeste laws mean public discussion of his health and succession plans are not permitted, and are punishable by lengthy jail terms.
Thailand's stock market has dropped by 6.5 percent since Sunday's health announcement and the baht has also dropped. The King is now unable to perform his duties, which places the head of the Privy Council, Genereal Prem Tinsulanonda as regent, according to the Thailand Constitution.
Bhumibol, a constitutional monarch with no formal political role, is widely regarded as Thailand's unifying figure. The military seized power in 2014. Previous statements tended to end on a positive note after successful treatment.
Over the last two years he has been treated for bacterial infections, breathing difficulties, heart problems and hydrocephalus - a build-up of cerebrospinal fluid often referred to as "water on the brain".
In June, the king celebrated his 70th year anniversary on the throne - from his hospital bed, immobile and wracked by a variety of age-related ailments that have made Thais wonder what their world would be like without him.
Vajiralongkorn, 64, has yet to attain his father's widespread popularity.
People across Thailand have worn bright pink clothes this week, which many believe will attract good luck for their king's condition. His son and heir, Crown Prince Vajiralongkorn, has not engendered the same level of respect.
There are outpouring of best wishes for the 88-year-old monarch.
"He is like my angel".