The local nasal cavity was treated with 1 % Ephedrine Hydrochloride drops (2 drops each time, twice a day) for 2 weeks. Sterile saline (100 mL) at 37 °C was used to rinse the nasal cavity. Irrigation ...

Hyperpigmentation appeared on eyelids, nasal ala, tongue, and palms without discomfort. Extensive investigations ruled out common causes; the patient had no prior dermatological conditions.