Hello and thank you for asking your question. My name isXXXXX will try to help.
Did you just notice this today?
Is the bump the same color as the rest of her skin?
Does it bother her if you press on it?
What size is it?
If it were a skin infection, or a bug bite/sting, the surrounding skin would be red. So it is good that it is the same color as the rest of her skin.
If it were an abscess, or pocket of infection, then it would feel warmer than the rest of her skin and painful to the touch.
It sounds like she has had trauma to that area. She hit her head on something.
Another good thing is Daisy is only 3 months old. So we really do not need to worry about cancer or tumors.
Most likely the bump will take 2-3 weeks to go away completely.
You can try to assist this process by applying over the counter hydrocortisone spray, or cream, three times a day. Hopefully this will help shrink the tissue more quickly.
I hope this helps.
If you have additional questions, please click "reply." Thank you : )
No, if it were the occipital bone, then it would not appear suddenly like that.
Since the occipital bone does stick out a little, she could have hit the occipital bone and now it is swollen.