7 doctors weighed in:
How long does a hematoma takes to form?
7 doctors weighed in

Dr. James Ferguson
Pediatrics
5 doctors agree
In brief: Varies
This will vary some with the location and the size of the blood vessel(s) broken that give rise to the hematoma.
Multiple tiny vessels under a nail may take minutes.A big vessel under the scalp may accumulate a hematoma over several hours.

In brief: Varies
This will vary some with the location and the size of the blood vessel(s) broken that give rise to the hematoma.
Multiple tiny vessels under a nail may take minutes.A big vessel under the scalp may accumulate a hematoma over several hours.
Dr. James Ferguson
Dr. James Ferguson
Thank
Dr. Yale Kanter
Ophthalmology
In brief: Hematome
An acute hematoma develops immediately after the trauma or surgery, whereas a chronic hematoma can develop over time and may be associated with a slow bleeding or extravasation of blood.

In brief: Hematome
An acute hematoma develops immediately after the trauma or surgery, whereas a chronic hematoma can develop over time and may be associated with a slow bleeding or extravasation of blood.
Dr. Yale Kanter
Dr. Yale Kanter
Thank
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