Please choose the correct ending to complete the given sentence: Health: [header] How to diagnose trichotillomania [title] Notice hair pulling locations. [step] Trichotillomania is characterized by a persistent urge to pull out one's body hair. Trichotillomania involves pulling out hair, yet is not exclusive to the hair on one's head.

Ending1: The hair to pull is usually between your ears and across your back. [substeps] The goal is for trichotillomania to always be in the back of one's head, where hair can be pulled upwards. Ending2: You may notice the person pulling out eyelashes, eyebrows, pubic hair, or other body hair. [substeps] Do notice the person pulling at body hair? Do you notice times when the person pulls all the hair from his eyebrows or eyelashes? [title] Observe patchy areas or bald spots. Ending3: The brain involved in this process focuses on converting the facial hair located on one's head into a " crown. " [substeps] This is due to the fact that the hair is drawn out without connecting to the crown. Ending4: It is also known as hair pulling and is a symptom of a larger medical problem, such as trichotillomania. [substeps] Trichotillomania originated in childhood and developed over the years.

Answer format: ending1/ending2/ending3/ending4