Hi ! Good morning. I am Dr Shareef answering your query. Although the diarrhoea is not related to the head injury, napping more in a child of this age is difficult to judge or rule out to be due to the injury. If I were your doctor, I would have advised you to keep a close watch on her level of consciousness to see if she is responding normally to your routine talks with her, and if she is moving her limbs normally, and has not got any vomintings. The bump on her head is due to collection of blood by the injury, and will subside gradually. In case of any change in the level of consciousness of hers to your commands, and any increase in the bump on the head, I would advise you to take her to the ER room of the nearest hospital, where they would examine her closely and if considered necessary might go for some investigations like a CT scan to rule out any concealed head injury. I hope this information would help you in discussing with your family physician/treating doctor in further management of your problem. Please do not hesitate to ask in case of any further doubts. Thanks for choosing health care magic to clear doubts on your health problems. Wishing you an early recovery. Dr Shareef.