The doctors decided to investigate by inserting a small camera into his respiratory tract, where they found several dark-colored hairs growing in his throat. Initially, the doctors were able to remove the hairs, providing temporary relief for the man.

In the writing in the American Journal of Case Reports, the authors stated that this strange incident was only the second case ever found. Scientists also explained that smoking can trigger inflammation in the throat, which can cause cells to change into hair follicles. Every time the doctor examined, there were six to nine strands of two-inch hair growing in the man's throat.

The doctors decided not to offer corrective treatment until the man quit smoking, which he eventually did in 2020. They performed endoscopic argon plasma coagulation, which involves burning the hair roots. One year after the procedure, two strands of hair reappeared and additional treatment was performed. Since then, no hair has grown back. Source: The Sun.