Burma’s leader Aung San Suu Kyi has been suffering from exhaustion following her tour to the UK and USA, her office has announced, adding that “it was nothing to worry about”.

The Office of the State Counsellor on Monday announced Suu Kyi received a medical check-up yesterday upon arriving back in Burma. Doctors reportedly found that she was weak from having very little rest due to a busy schedule in the US. She was also said to have a swollen stomach from irregular eating patterns, and bone spurs in the neck caused by frequent computer usage.

The announcement said her condition “is nothing to worry about” and that she just needed a good rest.

Last week in New York, Suu Kyi addressed the United Nations General Assembly for the first time as a national leader.

The week before, in Washington, Suu Kyi urged businesspeople to invest in Burma, as US President Barack Obama simultaneously pledged to lift longstanding sanctions on the Southeast Asian country.

Serving also as Burma’s foreign minister, Suu Kyi, now 71, had earlier in the week met in London with her British counterpart, Boris Johnson, as well as other UK government ministers and businesspeople. She also briefed 12 Burmese ambassadors stationed in Europe and the Middle East on the foreign policy of her National League for Democracy-led government.

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During Burma’s dark era of military dictatorship, Suu Kyi was widely regarded as the country’s pro-democracy icon and held under house arrest for a total of 15 years. Although her then doctor, Tin Myo Win, performed regular monthly check-ups, she suffered several bouts of ill health during this time.

In 2012, she fell ill during a European tour. Her doctor Pyone Moe Ei said that “lack of rest and her extremely tight schedule are very worrisome.” He was also quoted as saying that although Suu Kyi had no serious health problems, she only weighed 48 kilogrammes (106 pounds), had low blood pressure, and became weak easily.

Last year, during a nationwide election campaign, the NLD leader missed an Armed Forces Day ceremony in Naypyidaw, with again a grueling schedule and overwork blamed for her exhaustion.