Princess Aiko has complained of an upset stomach and has showed deep anxiety since March 2.

The Imperial Household Agency said that Princess Aiko and several other students had been "treated harshly" by boys in another class. A school official said the incident may have been a misunderstanding.

Crown Princess Masako accompanied Princess Aiko to the school to attend the fourth period of morning classes. They then left the school together.

The outing was a rare public appearance for Crown Princess Masako, 46, who was diagnosed with an adjustment disorder in July 2004. Her condition is attributed to the difficulties of adjusting to palace life and the pressure to bear a son. Crown Princess Masako hasn’t attended most official duties for several years.

Doctors monitoring the health of Crown Princess Masako said March 5 her condition has vastly improved but she needs more time to reach a level that will allow her to expand the scope of her official duties.

Princess Masako "has gotten better and is now in a state incomparable to" five and a half years ago when she started to receive treatment, the doctors said in a statement issued through the IHA.

"However, considering her long battle with the illness and the stress she has been under, it will take more time for her to expand the scope of her activities," the statement said, noting that she "has made surprisingly great efforts" to overcome the illness.

In the statement, the doctors noted that the support of people close to her, especially members of her family, has played a key role in helping her to recover. "Watching Princess Aiko growing up and her increasing exchanges with her friends is a joy as well as a remedy for the crown princess," it said.

The doctors mentioned the crown princess’ presence last year at events commemorating the 20th anniversary of Emperor Akihito’s ascension to the throne as well as at a ceremony last month to mark the 15th anniversary of the Great Hanshin Earthquake.

The visit to Kobe for the quake memorial ceremony was her first official trip outside Tokyo involving an overnight stay since January 2008.

The statement warned, however, that high expectations for more public appearances could hamper her recovery.

"Although expectations for her to perform more official duties are expected to grow as her recovery progresses, it is necessary to consider the workload that she would shoulder so that it would not impose a heavy burden," the doctors said.

Some medical experts outside of the imperial family are skeptical about the prospects for a full recovery being achieved quickly.

"Although the cause of her stress is not clearly shown in the report, I assume there may be a gap between the feelings of Crown Princess Masako, who is longing to live the way she wants to, and the Imperial Household Agency, which tends to put things in a mold," said Masaaki Noda, a professor at Kwansei Gakuin University. "It looks like her illness could last longer judging from the doctors’ opinions," he said.

(Above compiled from news reports)

Princess Masako’s condition could have an influence on her daughter. 

The reports about Princess Aiko’s experience at school seem to indicate nothing more than normal, temporary fears.

However, studies suggest that children or adolescents are more likely to have an anxiety disorder if they have a parent with anxiety disorder.
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