Why do men and boys get erections?
Madeleine M. Castellanos, MD
While it's true that erections can develop in response to a wide range of physical, mental, or emotional stimulation -- young boys and men may get erections for no clear reason -- it's a bit more complicated than "see boobs (or butt, or wildebeest, etc.), get hard." In fact, the journey that ends in an erection is a multi-step process that involves a number of different body parts and systems, including the hormonal, circulatory, and nervous systems.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.