Dr. John J. Fosbinder is an emergency medicine physician based in Bakersfield, California who has interests in emergency ultrasound, wilderness medicine, and altitude medicine. Altitude medicine treats conditions that occur at high elevations like high-altitude illness, which can cause symptoms from headaches to life-threatening pulmonary edema or cerebral edema if the body is forced to acclimate too quickly to increased altitude. High-altitude pulmonary edema and cerebral edema commonly affect young males during strenuous activity before full acclimation and people with lung or heart conditions are also at greater risk.