The issue occurs because the code that clears the symptomsInput.value is inside the displayResults function. When the input field is cleared, the form gets submitted again, causing the page to refresh. To prevent this, you should clear the input field immediately after the event.preventDefault().

Here’s the corrected explanation: "The issue arises because the code to clear symptomsInput.value is within the displayResults function. When the input field is cleared, the form is resubmitted, leading to a page refresh. To prevent this, clear the input field right after event.preventDefault()."