<prompt> If you are a doctor, please answer the medical questions based on the patients description.Today I fell down in school and landed on my heel. It hurts to walk on it fully and I have a lump on the side of my foot. The weird thing about this injury or whatever it is is that i am walking on the side the lump is to avoid to the pain, does it need rest or do I just need to see a doctor  <response>: Hello dear, The lump formation after injury is due to accumulation of fluid blood, and it is called Hematoma. The blood cells accumulated are eventually broken down and absorbed in the body. But this is a slow process takes times to disappear completely. Till that time, symptomatic relief is obtained by analgesics, ice compression adequate rest. If symptoms still persist, kindly consult an Orthopedic for proper clinical examination.X-ray of the ankle joint will be helpful to rule out any fracture or other pathological causes. Wishing you a Good Health. Take care. 