Final answer:
Chronic stress can lead to high blood pressure and elevated corticosteroid levels, resulting in symptoms such as headaches.
Step-by-step explanation:
The relationship between Daniel's stress and his signs and symptoms is that chronic stress can lead to high blood pressure and elevated corticosteroid levels. When a person experiences stress, the adrenal glands release hormones such as cortisol into the bloodstream. Prolonged or chronic stress can result in high levels of cortisol, which can weaken the immune system, increase the risk of illness, and cause symptoms such as headaches.