Shutterstock and Corbis, two stock photo websites, have stock photos of tongues with sores. Specifically, Shutterstock has a stock photo entitled “Young guy checking tongue in mirror” that depicts a man sticking out his tongue that contains a sore, and Corbis has several depicting different diseases that produce tongue sores.
Usage of stock photos can be complicated and is tightly controlled, according to Stockphotorights.com, and usage almost always involves a license fee. Royalty-free images usually have unlimited usage once the license fee is paid, while rights-managed stock photos license agreements have limitations on their usage based on different factors such as usage duration, purpose and industry. The image at Shutterstock is a royalty-free image and costs $14.50.