Litfulo Capsules Special Investigation

The objective of this Study is to confirm the safety during the long-term use of this drug and the effectiveness during the use of this drug under the actual use in the patients treated with this drug.

Inclusion Criteria: Patients must meet all of the following inclusion criteria to be eligible for inclusion in the study: * Patients with alopecia areata who start receiving this drug for the first time after the contract date of this study * Patients who have not participated in a clinical trial (clinical study) of this drug Exclusion Criteria: Patients meeting any of the following criteria will not be included in the study: * Patients previously enrolled in this study * Patients with a history of treatment with this drug (including investigational product)