Evaluation of the Efficacy and Safety of Indigo Naturalis Oil Extract on Psoriatic Nails

Exclusion Criteria

• •1. Patients had non-plaque (i.e., pustular, guttate, or erythrodermic) or drug-induced forms of psoriasis, total body surface involvement of more than 60%
• •2. a history of allergy to indigo naturalis, or with onychomycosis or any fingernail infection.
• •3. Patients have received systemic therapy within four weeks before enrollment
• •4. Patients have received phototherapy within three weeks, or topical psoriasis agents within two weeks.
• •5. Using medications which affect psoriasis during the study and unwillingness to comply with study protocol.