It is unlikely that you have an allergy to beer or to alcohol. Although there are rare cases of documented allergies to alcohol, this is very uncommon. However, another condition is quite common. This is a deficiency in an enzyme called acetaldehyde dehydrogenase.
North Korea runs trading companies in Thailand, Hong Kong, Macau and Cambodia, which export North Korean goods - mostly clothing, plastics and minerals such as copper - to the region.
That income was thrown into doubt in February when China said it would halt all coal imports from North Korea for the rest of the year. Chinese imports of North Korean coal fell by 75% in the first half of this year, according to Chinese government data.