Why does hiv infection cause frequent infections?

HIV targets immune cells involved in coordinating the response to viruses, bacteria and fungi. When these defences are impaired, an infection may recur, last longer or become more severe than expected. Frequent infections are a common presentation of HIV Infection, but they can also occur for reasons unrelated to HIV, including exposure to young children, stress, other medical conditions or medicines.

Arrange a clinical review if infections keep returning or do not recover as expected. Bring details of the infection sites, treatments used, fevers, weight change and current medicines. If you have HIV, taking treatment consistently and attending follow-up appointments helps your care team monitor immune health and address infections early.

Get prompt medical advice for repeated mouth sores, persistent cough, prolonged diarrhoea, painful swallowing, recurring fever or infections that keep returning after treatment. Seek urgent care for difficulty breathing, severe headache with fever, confusion, severe weakness or signs of dehydration.

Ask whether the pattern suggests a problem with immunity, which tests can look for contributing causes, and whether any current medicine changes infection risk. Ask what symptoms should prompt same-day contact and how to reduce exposure to common infections.