There are several types of bleeding that may result from head trauma: 1. Subcutaneous hematoma, that is, bleeding is outside the skull, below the scalp, this condition is not life-threatening, generally found at the time of injury or late after the scalp swelling, the day of injury can be considered cold compresses, 24 hours after the hot compresses to promote the absorption of bruises, a large range may require incision and drainage, a small range of their own absorption. Because sometimes this condition is described as subcutaneous bruising, I’m not sure if the subcutaneous bruising clot you’re talking about is this condition. Of course I judge that this is less likely because it has been 1 month since your mother’s injury and if there was a larger area of subcutaneous hematoma, it would have been noticed at that time and she probably would have gone to the doctor. Those with a small range have been absorbed for a month. 2, epidural hematoma, that is, inside the skull, the brain outside of a layer of membrane (dura) between the outside of the hematoma, this hematoma is usually after the injury or late a few hours after the appearance of bleeding in large amounts will lead to the patient brain herniation, coma death. If the hemorrhage is small, it may resorb on its own, or it may mechanize. This hematoma is not usually described as a subcutaneous bruised blood clot. It can be considered to be excluded. 3. Subdural hematoma, which is a hematoma between the surface of the brain and the layer of dura outside the brain, is called a subdural hematoma because it is under the dura (the above type of hematoma is called an epidural hematoma because it is outside the dura). There are acute subdural hematomas and chronic subdural hematomas. Acute subdural hematomas are those that appear at the time of injury, which are usually more severe, have more obvious symptoms, and need to be treated at that time, which should be ruled out from your mother’s condition. The other condition is chronic subdural hematoma, which is common in the elderly, with a history of head trauma, no symptoms at the time of injury, and then a period of time (one or two months or even up to several years) after the injury, symptoms such as headache, dizziness, nausea, vomiting, and even weakness of one limb and hemiparesis, which can lead to brain herniation and death. Because the course of your mother’s illness is more in line with this situation, it is possible that this is the case. 4, subcortical hematoma, this kind of bleeding is occurring in the brain tissue, can occur at the time of injury, but also a few hours later. The condition can be mild or severe, depending on the amount of bleeding and the location of the emergency or not. If the trauma is serious and the bleeding is large, the patient will be hemiplegic, comatose or even dead in a short time after the injury, but if the injury is mild, the bleeding is small and diffuse, plus your mother is older, there is a certain degree of brain atrophy, the brain tissue is still able to compensate for the increased pressure caused by the increase in the volume of cranial contents, the patient may feel like he has a headache and no other symptoms at that time. However, with the prolongation of time, as this bleeding is in the brain tissue, the self-absorption is slow, and edema will appear around the hematoma, leading to the increase of intracranial pressure, and the patient’s symptoms will be aggravated. Especially in the elderly, there is mostly inadequate blood supply to the brain, and the symptoms become more pronounced when the intracranial pressure rises leading to a vicious circle. Consider that you may have been in an anxious mood and dropped the “layer” in the subcortical blood clot while typing. Thus, your mother’s diagnosis is most likely the last one, post-traumatic subcortical hematoma, and does not exclude post-traumatic delayed subdural hematoma. Regardless of the diagnosis, a treatment plan will need to be determined in conjunction with the patient’s physical examination and imaging data. Therefore, one option is for you to send me your mother’s imaging data, and I will determine the next treatment plan based on the imaging data in general. The other option is for you to take your mother, with the imaging data, to the neurosurgeon’s office for a neurosurgeon’s opinion.