See doc: if she has never had a headache this bad before, take her to the ER now and found out what is going on. A new severe headache can be serious, and may have nothing to do with donating blood. If it goes away with tylenol (acetaminophen) and is gone now, call her doctor for advice. You can give more details there than you can on this forum.
Answered 11/21/2014
3.5k views
Donating blood: should not cause the above symptoms, especially a week later. There are many causes for headache and shoulder pain which can include muscle strain, anxiety and migraines.
Answered 11/21/2014
3.5k views
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