If you or your child has a thyroglossal duct cyst, you might first notice the cyst because there’s a lump on your or your child’s throat that moves up when you or your child swallows. You also may spot a cyst when you or your child sticks out their tongue. Sometimes, healthcare providers discover these cysts while doing a physical examination for another reason. Other symptoms include: Thyroglossal duct cysts can be felt through your skin. If you touch the cyst, it may feel soft, smooth and round, like a tiny ball of cookie dough. These cysts can swell and hurt if you or your child develops an upper respiratory tract infection that spreads to the cyst. Thyroglossal duct cysts can rupture, oozing fluid through your or your child’s skin. These cysts can make it hard to swallow food or liquids.