Hair loss is more common than you think with. Most people experience an episode of excessive hair shedding at least once in their lifetime. So many factors can lead to this problem that sometimes it's difficult to identify the right cause - especially if hair loss is only temporary.
Surprisingly, hair loss after surgery is also a common occurrence. Therefore we're going to explain how anaesthesia can lead to telogen effluvium and how to restore your normal hair growth rate after anaesthesia and surgery.
Having anaesthesia administered, and followed by surgical intervention, can create a stress response in the body. In this way, the patient can develop telogen effluvium, i.e. the condition in which hair loss after surgery is triggered by a traumatic event or stress, be it physical or psychological.
Common causes of telogen effluvium are; childbirth, bouts of chronic diseases, low-calorie diets, certain drugs and emotional upheavals. Major surgery and anaesthesia belong to this group too.
Our body sees surgical intervention and anaesthesia as a stressful event, primarily because many physiological processes are being put on hold. Anaesthesia can also temporarily alter the nervous system and hormone levels.
General anaesthetic blocks neural signals in the whole body which results in loss of consciousness. Only vital physiological functions, like breathing, continue to work. Many processes become suspended, such as digestion or light reflex.
Hair growth isn’t considered a vital function for the body and, hence, gets suppressed too. When in stress, the vital resources (nutrient elements, oxygen, etc.) travel to those areas of the body, where they are needed the most for the organism to survive.
Since the hair is not an essential tissue, the body diverts the flow of nutrients from the hair follicles to other areas. This, in turn, can lead to hair loss after surgery.
Moreover, each hair follicle has its nerves which transmit a distress signal during anaesthesia and surgery. This can make the follicles in the telogen phase shrink and basically ‘put them to sleep’.
Again, anaesthesia puts a lot of strain on the body. How does the body respond to that? By releasing cortisol, the ‘stress hormone’.
Cortisol causes the shrinkage of the blood vessels, meaning that the blood flow to the scalp becomes partially restricted. As a consequence, hair follicles are starved of nutrients and the hair growth slows down considerably.
And, since each hair follicle has its own adrenal gland where cortisol is secreted, the strands are affected by it directly after a stressful event.
To understand how hair loss after surgery occurs, we need to have a look at the hair growth cycle. It comprises the following phases:
When a person goes through a highly stressful event or is exposed to an external shock, up to 70% of the total hair can prematurely enter the telogen phase, followed by excessive hair shedding. Apart from that, stress can also extend the duration of the telogen phase.
Telogen Effluvium is a temporary condition that usually lasts up to 6 months. As a rule, it does not require any specially targeted treatment. You can reverse hair loss after surgery by eliminating the source of the stress and by using medication that boost hair growth.
Please note that the hair fall will not occur following the anaesthesia immediately but around 2-3 months after (this can again be explained by the duration of each phase of the hair growth cycle).
This makes it more difficult for the person to identify the real cause of hair thinning. Hence, if you notice excessive hair shedding, try to analyse your health history going a few months back.
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Anaesthesia can lead to hair loss after surgery, even though it’s rarely recognised as the culprit because hair loss only becomes visible several weeks to several months after the operation.
It is also believed that the chances of developing telogen effluvium after anaesthesia will depend on the type of anaesthetic used. However, no conclusive research has been done to back this up.
Analgesia and sedation put a lot of strain on the body. Such physical stress may induce hair loss in the following ways:
Such stress-induced hair loss is known as telogen effluvium. It is usually a temporary condition that does not require a targeted treatment plan. Nevertheless, the side effects can be managed with some medications, balanced nutrition and proper hair care.
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