Whats the technologies used to Diagnostic Neurological pain?

These constant headaches am getting are called false by some of my family members, so i just wanna prove them am actually having these headaches(They’re stubborn as hell and bit dimmed minded) I saw in Grey’s Anatomy that they used some imaging diagnostic tool to determine a guy’s constant headache for 8 years, mine has been for 4 so please i need help to identify my problem.
I did see a neurologist, he gave me meds for the headaches 6 months ago but its still there.

What is the best kind of antivirus protection?

I need some good, strong protection because I am a complete idiot about anything concerning technology. That, and I have extremely low vision, so I can’t always tell exactly what I’m clicking on. No matter what type of free protection people tell me to use, I keep getting viruses. Please help me! My poor computer cannot take it much longer.

How does fingerprinting work to catch a thief?

Okay so my husbands tool trailer was broke into and thousands of dollars of tools were stolen. The cops came and dusted for fingerprints. What I am wondering is how they know what prints to get being that all of the crews prints are probaby over the trailer Im sure. Do they get them all and try to narrow it down or is it only the newest ones. Please explain thanks.