As a senior writer for Live Science, Laura Geggel covers general science, including the environment and amazing animals. She has written for The New York Times, Scholastic, Popular Science and Spectrum, a site covering autism research. Laura grew up in Seattle and studied English literature and psychology at Washington University in St. Louis before completing her graduate degree in science writing at NYU. When not writing, you'll find Laura playing Ultimate Frisbee. Follow Laura on Google+.
Minoxidil (Rogaine) is available over the counter and available in 2%, 4%, and 5% concentrations. It may be something of a nuisance to apply twice daily, but it has been shown to help conserve hair and may even grow some. Minoxidil tends to grow very fine small hairs wherever it is applied. It is important to avoid running the liquid onto the face or neck where it can also grow hair. It is marketed for women at the 2% concentration but may be used in higher strengths as directed by a doctor.
See a doctor. While it may be easy to treat hair loss that's caused by stress or other physical or emotional shock, other types, especially those caused by medical conditions, require expert attention. Do not self-medicate. A medical test is necessary to determine the real cause of your hair loss. A medical diagnosis is important in order to rule out other factors that might be the cause of your hair loss. On the surface, it's easy to attribute hair loss to stress or the lack of sleep, but it is highly possible that the hair loss may be caused by an unknown or undetected condition related to hormones or genetics. With the right diagnosis, you'll be able to get the right medication and course of treatment.