If you are being bitten by ‘je jenes’, known as ‘no seeums’,  there is little evidence of the bug – only the bite and welt they leave behind.  You won’t be able to see them and although you can read about many ways to prevent such bites on other websites, the only way to treat them is to use a topical cream that can be purchased in the pharmacy.  Simply show your bites to the pharmacist and they will sell you the cream/spray.