Secondary immune deficiencies occur when the immune system is weakened due to external factors rather than being inherited. These factors can include infections, such as HIV, certain medications like corticosteroids, or chronic diseases such as diabetes and cancer. As a result, the body becomes more susceptible to infections and illnesses. Unlike primary immune deficiencies, which are genetic, secondary immune deficiencies can often be treated by addressing the underlying cause. For example, managing a chronic illness or adjusting medications can help restore immune function. Awareness and early intervention are crucial for improving health outcomes in affected individuals.