Hi,Dear thanks for the query to HCM.
Treatment for Your hard lump in head-
a-In my opinion its a organising
hematoma as its hard now and is -post-traumatic hematoma due to skull bone hit.
b-AS you are in the hospital and worried -you can request your doctor to get the Skull -Xray done to detect any
fracture which you fear.
c-The treatment for the mouth
injury would take help of the organising hematoma.
d-Its only if you have any ENT bleed or diziness or
vomiting or nausea-for which you can ask for Surgeons opinion -from your hospital doctor.
Hope this would help your worry to take proper steps for health.
Wishing you fast recovery.
Wellcome again if you have any more query in this regard.Have a Good Day.