Feeling cold after head injury could be a secondary effect from head trauma. This does not apply to feeling cold when the air conditioner is blasting. Rather, when your environment and body are at a normal temperature but you find yourself feeling cold, it could be an effect of traumatic brain injury.
This article will explain why you might feel cold after head injury and what you can do to address this secondary effect.
Why Some Survivors Feel Cold After Head Injury
Around 13% of TBI patients complain about feeling persistently cold after a head injury or concussion. This symptom may be caused by damage to the parts of the brain that control the body’s temperature.
The human body possesses a complex thermoregulation mechanism that keeps it at a balanced temperature. This delicate process is controlled by the hypothalamus, the part of the brain in charge of numerous bodily functions.
The hypothalamus helps balance body fluids and controls the release of hormones that play a part in temperature regulation. For example, when the body gets too cold, the hypothalamus releases hormones that cause blood vessels to shrink. This traps the heat in your blood and preserves body temperature.
If the hypothalamus becomes damaged after a head injury, this process could be disrupted. As a result, you might feel cold after head injury even when your environment is at a normal temperature.
Neuroendocrine Disorders and Cold Sensitivity
Another possible cause of cold sensitivity after a head injury is pituitary dysfunction. The pituitary is a gland in the brain that helps stimulate activity in the hormone glands throughout the body.
One important gland that the pituitary stimulates is the thyroid, a butterfly-shaped gland on the front of your neck. It produces several thyroid hormones that are critical for functions such as metabolism, growth, and body temperature.
If the thyroid does not receive stimulation from the pituitary gland, however, it cannot produce these crucial hormones. This leads to hypothyroidism, which can cause the following problems:
- Increased sensitivity to cold, sometimes resulting in chills
- Concentration and memory problems
- Unexplained weight gain
- Depression
Cold sensitivity is a common symptom of hypothyroidism. Therefore, if you are constantly feeling cold after head injury or concussion, it is possible that your thyroid is not functioning correctly.
Diagnosis & Treatment for Feeling Cold After Head Injury
The best way to address impaired thermoregulation (i.e. feeling cold after a head injury) is to determine the cause of your cold sensitivity. For example, if hypothyroidism is the problem, your doctor may put you on synthetic thyroid hormones to help regulate your temperature.
On the other hand, if impaired thermoregulation is caused by hypothalamus damage, vasopressin may help. Normally, nerve cells in the anterior hypothalamus send signals to the pituitary gland to release vasopressin. Vasopressin has many important functions, one of which is to constrict the blood vessels to preserve heat. If the hypothalamus does not send these signals, however, the body will have trouble feeling warm. Taking vasopressin can help counter that effect.
While your doctor may recommend medication if you struggle with feeling cold after head injury, your occupational therapist may be able to help you with sensory retraining. This intervention is designed to help retrain the brain how to process sensory input.
Most clinical evidence analyzes the effect of sensory retraining on other sensory issues like numbness or pain. However, this intervention is non-invasive and requires no additional medication, so it could be worth exploring with your therapist to see if it can help with impaired thermoregulation.
Tips to Cope with Feeling Cold After TBI
As you work with your medical team to diagnose and treat the root cause of impaired thermoregulation, there are other steps you can take to temporarily warm your body up.
Here are some extra tips to cope with feeling cold after head injury:
Dress in Layers
Dressing in a few light layers can keep you warmer than wearing a single heavy jacket. Three layers are usually the ideal amount. Try wearing something thin like a thermal undershirt, then a wool sweater over that, and a jacket over everything. Wearing layers allows you to take some off easily if you get too hot, and keeps your body more insulated.
Get Moving
Exercise helps raise your core temperature and provides temporary relief from feeling cold after head injury. In fact, nearly 85% of body heat is generated by muscle contractions.
The exercises you choose don’t have to be too strenuous, just enough to elevate your heart rate. If you don’t have enough mobility to raise your heart rate through exercise, work with your therapists to improve mobility after TBI through targeted rehab exercises.
Understanding Impaired Thermoregulation After Head Injury
Cold sensitivity can occur after head injury for a number of reasons. For example, it could be a result of hypothalamus damage or even a sign of hypothyroidism.
Whatever the cause, there are remedies to help you feel less cold after brain injury. Talk to your doctor about any medications that might help and ask your therapist about sensory retraining exercises. While you are waiting to learn the root cause of feeling cold after head injury, certain coping techniques such as exercise and warm clothing can be used to increase your core temperature.
The post Feeling Cold After Head Injury: Understanding the Causes & Treatments for Cold Sensitivity appeared first on Flint Rehab.
