Bump in the back of my head that is hard and it really hurts feels like its full fluid?

Seek medical attention. A hard bump on the back of your head that is painful and feels full of fluid could be a sign of a serious medical condition, such as a blood clot or an abscess. A healthcare professional will be able to evaluate the bump and determine the best course of treatment.

In the meantime, you can try the following to relieve pain and swelling:

* Apply a cold compress to the bump for 20 minutes at a time, several times a day.

* Take over-the-counter pain relievers such as ibuprofen or acetaminophen.

* Rest and avoid strenuous activity.

* Drink plenty of fluids to stay hydrated.