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Environmental Triggers of Alopecia Areata

Alopecia areata is a type of auto-immune disorder that causes sudden, patchy hair loss on the scalp. Whilst scientists are still unsure what causes some people to develop alopecia areata (and it’s estimated that around 2 per cent of people worldwide experience the condition) it does seem that there are many possible environmental triggers.

Hair loss from alopecia areata occurs when the hair follicles prematurely enter the telogen (rest) phase of their cycle, before shedding. Whilst there are a few different options available for treating the condition’s hallmark patchy hair loss, at Belgravia we find this can often be cleared up using products from the range of high strength minoxidil we offer at our centres. Even so, it is important to try and identify any environmental triggers that may be the root cause of the hair loss.

Chronic stress, hormones, sudden shocks and illness can all potentially lead to the autoimmune condition, but there are a number of triggers that occur outside of the body that can also be a factor. Below, we explore potential triggers to look out for.

Allergies

Statistical analysis of Caucasians with alopecia areata and some form of chronic allergy (such as eczema) found that they tend to have more extensive or more prolonged hair loss. However, when a similar study was undertaken with participants of Indian descent, no such link emerged, which suggests that the different genetic composition of different races should be considered when explaining susceptibility to alopecia areata development

Chemicals

An outbreak of alopecia areata in workers at a water treatment plant was linked by scientists to long term exposure to the chemical acrylamide. Other chemicals that have also been linked to the condition include formaldehyde and certain pesticides, but no clear connection has been established and the links remain theoretical. There has also been some suggestion of links between alopecia areata and medications or treatments, such as Zidovudine (used to treat HIV) and Fluvoxamine (an anti-depressant).

Seasonal changes

Many people with alopecia areata find that their hair loss can wax and wane with the seasons. It has been particularly noted that some find their hair loss is more extensive in the winter, with temporary regrowth occurring in the summer.

Local skin injury

Cuts, scrapes, and other types of damage done to the scalp can lead to the onset of a patch of this type of hair loss in susceptible people. Interestingly, though, similar damage done to an area of the scalp that is already afflicted by alopecia areata can cause temporary hair regrowth, on account of injury promoting anagen hair follicle growth in skin around the injury site.


Circ - The Belgravia Centre Treatment for Hair LossThe Belgravia Centre

The Belgravia Centre is the leader in hair loss treatment in the UK, with two clinics based in Central London. If you are worried about hair loss you can arrange a free consultation with a hair loss expert or complete our Online Consultation Form from anywhere in the UK or the rest of the world. View our Hair Loss Success Stories, which are the largest collection of such success stories in the world and demonstrate the levels of success that so many of Belgravia’s patients achieve. You can also phone 020 7730 6666 any time for our hair loss helpline or to arrange a free consultation.


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