After six weeks with your arm or leg in a cast, it's easy to understand why your skin might be dry and flaky—it's been deprived of water and moisturizer for quite some time. Your limb may appear thin because the muscles haven't been used, and there could even be a slightly unpleasant odour. You get it; that's part of the experience.
However, you might be surprised to find that your skin has grown more hair under the cast. This unexpected change is actually quite normal!
In this article, we'll explore the reasons behind the increased hair growth on your arm or leg after the removal of the cast. Read on to learn more about this mysterious phenomenon of post-cast hair growth!
What Causes Post-Cast Hair Growth?
Acquired localised hypertrichosis, the medical term for excessive hair growth in a specific area, is not typically influenced by circulating hormones unlike generalised excessive hair growth.
One possible reason for this local phenomenon occuring is increased blood flow to the area caused by an underlying fracture.
Another reason for the growth of hair in a particular area may be the direct pressure of a cast applied to the skin. When a cast is placed on an arm, it disrupts the normal hair growth cycle. This interruption prevents hair from growing and shedding naturally, resulting in an accumulation of hair follicles beneath the skin. When the cast is eventually removed, these hairs may emerge and appear thicker or darker than they did previously.
Additionally, the skin under the cast can become thicker and more resilient due to increased collagen production. This thickened skin can make it more difficult for hair follicles to break through, leading to a patchier appearance when they finally do surface.
Is Post-Cast Hair Growth Permanent?
The good news is that post-cast hair growth is not permanent. As the skin beneath the cast returns to its normal state and the natural hair growth cycle resumes, you should start to notice fewer hairs in the area. It may take a few weeks or even months for your arm to return to its pre-cast state, but eventually, all the extra hairs will fall out.
In the meantime, it can help to gently exfoliate the area and use a mild moisturizer to keep the skin hydrated. This can help speed up the process of hair shedding and minimise any irritation caused by trapped hairs beneath the surface.
Any Benefit to Having Hair Growth Under a Cast?
Unexpectedly, post-cast hair growth can have its benefits. For instance, thicker and darker hairs can provide additional cushioning and protection for the skin under the cast. This may help prevent further damage or irritation to the area while it heals.
Moreover, increased hair growth can offer an extra layer of insulation against the cold, helping to keep your arm warm as it recovers under the cast.
Summary
So there you have it – now you know why your arm is likely to be hairy after the cast is removed! As mentioned above, post-cast hair growth is not permanent and should start to fall out within a few weeks. In the meantime, gently exfoliating the area and using a mild moisturiser can help speed up the process.
