Blinding Head Cracking Headache

On Wednesday morning I suffered what I can only call an intense very painful head cracking headache that lasted about 2-3 minutes dying down to a painful throbbing for about 1 to 3 hours. I do not know what brought it about as I'd been sat listening to the radio totally relaxed when it occurred.

Anyway suffice to say I've not had a recurrence of that episode?