You have a lot of good information here! Once you have it properly organized, you will be well on your way.
Edit in the original material. Don't add a new thing below it. Incorporate the material that is already there!
Abstract should not have a header. It's just the part at the top.
Link HEAVILY to other wikipedia pages. The first time you use a term, it should be linked.
Every piece of information needs a citation. If you took all the info in a paragraph from one place you can just cite at the end of the paragraph, but nothing longer than a paragraph should be uncited.
Sources need to be cited using wikipedia's citaton manager.
Links to sources outside wikipedia should be formatted through wikipedia's links and given descriptive text, not just left as links.
The abstract that is already present is more appropriate than what you did. Leave it and add as necessary.
Don't break up your sections by rubric details unless that actually makes sense. Let it be clear and flow naturally, or break it up by clear, non-repetitive subheadings when appropriate. The rubric chunks are rarely good choices.
Don't repeat the same information in different sections unless it really matches the focus.
There is stuff in signs and symptoms that really doesn't belong there.
When you use subheadings, use the wikipedia system to make them subheadings so they show up on the outline.
This feels very disorganized. Information is repeated in multiple sections and is in places that it doesn't belong. The structure is hard to follow.
You should be able to find images on wikimedia for some of the symptoms and pathophysiology stuff.
Pathophysiology should be paragraph form and step through the details of what happens.
The path theories need much more explanation.
Don't use case studies in recent research when there are good recent medical studies! Case studies are a last resort if there is nothing better!
Don't use primary sources outside the recent research section unless the information can't be found elsewhere.
