From the article —
Expert Leonora Doclis believes Naomi may be suffering from hair loss brought on by years of using weaves to make her locks appear straight.
She said: “There is a possibility that Ms Campbell could be experiencing a condition called traction alopecia but, if so, it is a very mild case.
Upon seeing the photo on that page (before reading the full article text), I immediately thought about traction alopecia. If this is the correct diagnosis, then there will probably be other areas of her head that are impacted. Hair transplants work nicely for this condition and may be the only effective treatment available.