A 35-year-old man presents with hair loss on the side of his head. He states that during long office working hours he has a habit of pulling his hair at a certain area; this behavior increases with stress. He also states that he has been subjected to a severe workload lately. He does not take any medications. On examination, a 1 cm x 1 cm area of normal skin with no hair over the right temporal area is seen. No exclamation mark hairs are found.

Question
What is the most likely diagnosis?