When makeup gets in the way

In 2014 I was in my final year overseas preceptorship, shadowing a middle-aged male optometrist. The patient was a lady in her forties. He was on the slit lamp. “Hmm… do you see that?” he asked me. “Madarosis. Could be an autoimmune cause. We need to send her for a blood workup. What tests would you ask for?” The lady looked at me awkwardly. She and I knew that this was not the issue. My tentative diagnosis: lash extensions in their third or fourth week, when shedding is bound to occur!