Should you get ill or have a minor accident, you can find first aid, professional medical care, medicine and good advice in one of the many clinics around. If more serious you can reach hospitals in Chumphon and Samui by speed boat. Koh Tao Rescue will assist 24hrs with any medical emergency, accident & evacuation by boat - call 087 979 0191 or 1669
Now for some tips to avoid unpleasant interruptions of your valuable holiday. People who come first to the tropics always underestimate some dangers of the otherwise wonderful climate and surroundings.
Expose yourself slowly to the sun, 20 min on the beach is an awful lot for a white westerner. The burning rays will get you even in the shadow, through the reflection of the sea. Sunblock is essential. Wear a shirt when snorkelling. In case of sunburn best apply Aloe Vera.
You will sweat a lot and you'll have to refill your loss by drinking lots of water, 5 litres a day is the rule of thumb, and sorry coke or beer don't help at all. Fresh coconut juice though is miraculous, a natural electrolyte.
The sun again, better always wear a hat. Sitting in the sea is refreshing, but if for too long your head gets it all, in the same time your body can't sweat and your system shuts down. If you feel nauseous, feverish and dizzy, seek medical advice immediately.
Not dangerous but itchy. Likes humid climate and damp clothes. Prevent it with talcum powder which is cooling nicely too. Dry your towels in the sun. If it's too late you can get relieving creams in the pharmacies.
It's good, its tasty, but you've got to get used to some of it, take it easy with the spicy stuff and avoid salads with fermented crabs, they are meant to make you run. Chinese green tea and rice soup or yoke are excellent to calm down an upset stomach.
Even tiny scratches can turn into nasty things if not treated properly. Keep wounds dry and clean and use lots of Iodine. If it gets worse, quickly see a nurse.
You heard about them. They love sucking you dry in the early evening and anytime in the jungle. Don't scratch the bites or we are back to infections. There are plenty of repellents available. Cheaper is one of the local wonder ointments called Yah Mong, like Tiger Balm, this amazing stuff keeps them away, stops the itching and smells good. Helps for many other things too. Avoid sensitive areas like eyes or groin, that's worse than a bite.