Discovering a bald spot in your hair can be worrying. Whether you are a man or a woman, this localized hair loss, often visible on the scalp, is not always a sign of permanent alopecia. Sometimes it is temporary, but in other cases, it may indicate a form of alopecia that requires medical evaluation. In clinical research in Quebec, the symptoms and signs of alopecia can be an important first step in determining if you are a good candidate. How can you tell if the bald spot is alopecia areata?
Why do I have a bald spot in my hair?
A bald spot in the hair can have several causes. The most well known is alopecia areata, also called patchy hair loss or pelade, an autoimmune disease that causes round patches of hair loss, often without redness or itching. In other cases, the loss may occur after significant stress or an emotional shock, leading to sudden, localized shedding.
Other causes of hair loss
Certain hair habits, such as very tight hairstyles or frequently pulling on the hair, can weaken the scalp and cause a type of loss known as traction alopecia. A fungal infection of the scalp (such as ringworm) can also create a hairless patch, sometimes accompanied by flakes or itching. Finally, hormonal imbalance or nutritional deficiencies (related to iron, vitamins or thyroid health) may also explain this localized hair loss.
Bald spot in hair: how to know if it is alopecia areata?
A dermatological evaluation is essential to make the correct diagnosis. The professional, often a dermatologist, looks at the shape of the patch, the condition of the scalp and whether new growth is present or not. In some cases, a scalp examination (trichoscopy) or a blood test may be recommended to identify the cause. A precise diagnosis helps determine whether a specific follow up is needed.
Treatment for alopecia areata: clinical research in Quebec
The treatment of alopecia (pelade) always depends on the identified cause. In cases of alopecia areata, topical or injected treatments can stimulate hair regrowth. If the loss is linked to a scalp infection, an antifungal medication is prescribed. When a hormonal or nutritional imbalance is involved, a comprehensive treatment plan helps restore balance in the body. And if the loss is due to mechanical traction from certain hairstyles, it is essential to adjust hair habits to prevent worsening. In many cases, hair regrowth is possible, but it requires time, consistency and regular medical follow up.
Clinical research currently plays a key role in advancing treatments for alopecia. By studying new approaches and testing innovative therapies, these studies help improve the understanding of the mechanisms behind alopecia areata and offer, in the long term, more effective solutions to slow hair loss and stimulate regrowth. At the Centre de recherche Saint-Louis, our expertise in dermatology is made possible by an experienced team of dermatologists. Our ongoing clinical studies are available on our website.