My 23-year-old son started suffering from hair loss at the age of 17 years. Initially, his hair became thin, followed by severe hair loss. I took him to a dermatologist, who prescribed multivitamins and application of Minoxidil, but there were no results. All his blood tests, including vitamin D, thyroid profile, and CBC were normal, and there is no history of baldness in our family. We also tried homeopathy but got no results. He seems to be suffering from male pattern baldness. Recently I took him to another dermatologist, who prescribed Finax 1 mg, and said that it should be taken two years to give results. This medicine can give bad side effects like impotence and erectile dysfunction, so I would like your opinion.