As HIV gradually weakens your natural defenses, signs,and symptoms will occur. Stress caused by having the condition can also cause mental health issues. As HIV advances, there is a greater risk of dementia. Flu-like symptoms such as; fever, chills, night sweats are often early symptoms of HIV. Inflammation of the brain can cause seizures. High blood pressure from pulmonary arterial hypertension (PAH) con lead to congestive heart failure.