Hi. Noted the history about your 2 1/2 year old granddaughter playing in sand by the lake, developed bleeding from scalp and behind both ears, no other symptoms. This is surely serious hence should be taken to the Hospital asap. The possible causes can be some sort of insect bites harboring in the sand and the baby might have thrown sand on scalp as is known to happen commonly. Some bleeding or coagulation disorders can also cause such bleeding without itching and pain. Consult a Pediatrician and take second opinion of a Hematologist if the bleeding and coagulation profile indicates so. Clinical evaluation will help further to know the exact cause and get treated accordingly. Till then apply liquid Povidone iodine locally to avoid secondary infection. Hope I have answered your query. Let me know if I can assist you further. Regards, Dr. T. Chandrakant, General Surgeon