Hi doctor, I am having period irregular problem. I am getting pimples and having hair fall problem also. So I consulted Dr. for pimples and hair fall. She prescribed me some medicines, in which one tablet SOTRET and some creams like tivenka and livalite are there. It's been around five months, I have been taking these medicines. Now I am feeling I am becoming black. My skin is getting darker. Shall I stop these medicines? please help me.