Hi HollyHughes,
Welcome to the Migraine.com discussion forum - we're glad you're here! I'm sorry to hear about your recent diagnosis, that can be difficult. I've found it helpful to learn all I can about my various conditions which helps me cope with things a bit better.
Allodynia is when normally painless sensations become painful. I've only experienced this a few times, and understand how uncomfortable it can be. Examples of allodynia include, but are not limited to brushing our hair, air blowing across our skin, and others. Allodynia can occur in between attacks as well, which may be a factor to future attacks. Hopefully others will be along to share their experiences with you.
Basilar type migraine has been reclassified as migraine with brain-stem aura, which you can read about here; https://migraine.com/migraine-types/migraine-brainstem-aura/. Some of the symptoms of this kind of attack may be scary, but typically resolve when the attack is over.
Joint pain is not a typical migraine symptom, but may be an indication of something else. Many of us have comorbid conditions, which means we can have two conditions at the same time but neither cause one another. We have a number of articles that may be helpful here; https://migraine.com/blog/on-other-health-conditions.
Keep us posted on how you are doing,
Nancy