Welcome to Just Answer.
How large is the lump?
A bit larger than a quarter, I suppose.
Is it decreasing in size?
The initial inflammation has gone, but this bump has remained the same size for the past few days.
The lump will subside gradually in most cases.
But I would suggest to get an examination by doctor.
Though you do not have any symptom, sometimes symptoms can appear later if there is any subdural bleeding.
They can produce symptoms after days.
Doctor can examine the area & decide whether to take any scan.
Can you tell me about how long the bump should last. I also have MS. Do you think this could cause any additional damage for that reason?
Bump usually take 10 days to 2 weeks to subside, sometimes longer.
There would not be additional damage due to MS.
I meant to ask if head trauma could cause MS symptoms.
Head trauma would not cause MS symptoms.
Thank you for the information, Dr. Saha.