<s>[INST] Thank you, the day before yesterday a cast iron lamp fall off a shelf and hit me with a force the pain is really bad, it did not bleed, I have several big knots on my head and it is like a very dark red and I have a dent in my head, so I am tired and today I have diarrhea. I am not sure what to do I can not touch my head the size is bigger than half of dollar [/INST] Hi, thank you for the brief history of you. As you said you had a fall and also some knots over your scalp. You should see if you have any redness of the eye, bleeding from the nose or ear etc. Also, as you have a direct impact on the scalp I will advise to meet a physician on a safer note for him to examine you. Also you can take an MRI to see if any internal bleeding is there at a later stage if you have any abnormal symptoms. Swelling is a normal physiological process, and it subsided in 48-72 hours or may be a little longer depending upon the age and other factors. As you said apart from this you don't have any symptom than you can wait for a while do some icing and things should be fine. If you find any abnormal symptoms you can visit the ER on a safer side. With the grace of God I wish you a speedy recovery </s>