Can Heat Stroke Cause Subcutaneous Hemorrhage? Symptoms

Can heatstroke cause subcutaneous bleeding?

Hello, Doctor: It seems that not many people have this experience, so I would like to ask you: I have often experienced heat exhaustion during the summer in recent years (as diagnosed by Traditional Chinese Medicine).
During two instances of heat exhaustion, I particularly noticed small red spots on my arms.
These spots are bright red, flat, small enough to resemble pinpricks, and are not easily visible unless closely examined.
They temporarily disappear when pressed.
Besides my arms, I haven't observed them in other areas.
When I am not experiencing heat exhaustion, I haven't paid much attention to whether this phenomenon occurs (possibly because I usually wear long sleeves in winter).
I also do not know if the red spots would resolve with the alleviation of heat exhaustion.
Could the symptoms mentioned above be related to heat exhaustion? Thank you for your response, Doctor.

Bai Tuo Bu Yao Shan Wo Wen Ti, 10~19 year old female. Ask Date: 2018/03/19

Dr. Huang Xunying reply Family Medicine

The symptoms you mentioned are somewhat similar to a hemangioma or pigmentation (like a mole), but the color is red.
These can often appear due to sun exposure and may not necessarily fade after they appear.
If they do not disappear and you find them aesthetically uncomfortable, you can consult a dermatologist for treatment.
Additionally, regarding bleeding conditions, they will not resolve with pressure.
Sometimes, due to heat, blood vessels can dilate, and if you accidentally bump into something or apply pressure, it can cause microvascular rupture, leading to bleeding, which typically resembles a bruise.

Reply Date: 2018/03/19

More Info

Heat stroke is a serious condition that occurs when the body overheats, typically due to prolonged exposure to high temperatures or strenuous exercise in hot weather. It can lead to a variety of symptoms, including confusion, altered mental state, and even loss of consciousness. One of the less commonly discussed effects of heat stroke is its potential to cause subcutaneous hemorrhage, which can manifest as small red spots or petechiae on the skin.

The small red dots you described on your arms, which appear as tiny punctate lesions that blanch (disappear temporarily) when pressed, are indeed consistent with petechiae. These can occur due to a variety of reasons, including increased pressure in the capillaries, which can happen during heat stroke. When the body is subjected to extreme heat, the blood vessels can become more permeable, leading to leakage of blood into the surrounding tissues. This can result in the appearance of petechiae.

In the context of heat stroke, the body’s ability to regulate temperature is compromised, which can lead to systemic effects, including changes in blood pressure and blood flow. The increased vascular permeability can cause small amounts of blood to escape from the capillaries, leading to the formation of these small red spots. Additionally, dehydration, which often accompanies heat stroke, can also contribute to changes in blood viscosity and circulation, further exacerbating the issue.

It is important to note that while the appearance of petechiae can be associated with heat stroke, it is not exclusive to this condition. Other factors, such as trauma, certain medications, or underlying health issues (like clotting disorders), can also lead to similar symptoms. Therefore, it is crucial to consider the full clinical picture, including any other symptoms you may be experiencing, your overall health status, and any recent activities that might have contributed to your condition.

If you find that these symptoms persist or worsen, or if you experience additional symptoms such as significant bruising, prolonged bleeding, or signs of infection, it is advisable to seek medical attention. A healthcare professional can perform a thorough evaluation, including a physical examination and possibly blood tests, to determine the underlying cause of your symptoms and provide appropriate treatment.

In summary, while the small red spots on your arms could be related to your experiences with heat stroke, it is essential to monitor your symptoms closely and consult with a healthcare provider for a comprehensive assessment. Staying hydrated, avoiding excessive heat exposure, and recognizing the early signs of heat-related illnesses are crucial steps in preventing heat stroke and its associated complications.

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