What Causes A Lump On The Back Of The Head After Injury?
Take a few more weeks for resorption
Detailed Answer:
Hi.
Thanks for your query, albeit short and specific.
Noted the history and understood your concerns.
As per the history you have provided, this looks to be a hematoma of the scalp with an abrasion or so which caused little blood after washing hair.
Usually the time taken for the hematoma of scalp to settle on its own is one to three weeks.
Since this happened last week and the bump has reduced a bit without any symptoms, it may regress sooner, say within a few weeks.
I hope this answers your query.
Please feel free to ask for further relevant queries if you feel that there is a gap of communication.
What is the size of the bump?
Is there any fluctuation on palpation or is firm to hard?
This is large one
Detailed Answer:
3 inches is a large one.
I would advise you to consult your Doctor or a General Surgeon for clinical evaluation, examination, ultrasound to see the consistency and aspiration with tight bandage if he feels necessary.
This may help early resolution and avoidance of any complications like infection or organization.
Keep under observation.
Detailed Answer:
If this is a small one you may please keep it under observation and consult a Doctor if there is any pain, if not reducing or any other symptom.