Bangkok, major cities and resorts have excellent medical facilities and most hotels have doctors on 24-hour call. Water is not usually a problem in Thailand. Bottled water is cheap and available virtually everywhere except adventure venues. But Thailand is a tropical to sub-tropical region and may be extremely humid. Proper hydration is extremely important.

Heat and Sun are important considerations in Thailand. Drink more water than you think you need and don’t over exert. Take the sun gradually for the first several days. Consider using sun screens and avoiding exposure in the early afternoons. Hygiene will be important for two reasons. First, Thailand is hot and in the dry season can be dusty. You won’t perspire, you will sweat. Bacteria will will grow faster and and fungus infections are always an issue. Second, you will smell bad.