Conditions list medically reviewed by George Krucik, MD, MBA
If left untreated, HIV can lead to AIDS. AIDS weakens your immune system to the point where it can no longer fight off disease and infection. Learn more.
Nicotine addiction occurs when a person becomes addicted to nicotine, which is a chemical found in tobacco. The addiction is physical, mental, and behavioral.
Learn more about anxiety with this overview of anxiety disorders.
In women, fluctuating hormone levels are a major contributing factor in chronic headaches and menstrual migraines. Learn about causes, treatment, and prevention.
This feature is for informational purposes only and should not be used to diagnose. Please consult a healthcare professional if you have health concerns.