This sounds very vascular to mean, especially with the headache, and the bruising on the fingers with swelling.
This is seen in vascular disease.
Please get yourself checked out, as this needs a full evaluation.
Dont play around , go to the ER.
It could be allergy as this also plays with the circulation too. But either way allergy or vascular, they both need looking into sooner rather than later.
Best wishes
Nicola
As Londres70 stated, if this has not completely resolved head for an emergency room.
If it ever happens again the drill is "call 911". Head for the ER.
It is impossible to determine the direction these problems go.
Hi, I agree with Londres70 about the allergic reaction. You did the right thing by taking Benadryl. However I probably wouldn't use a cold compress on your hand. The bruising is most likely restricted blood vessels. This has the appearance of bruising. It will have patchy blue and purple areas. Due to lack of circulation in your hand causes the swelling. It is possible that you touched your food with your hand, hence the reaction. If at any time your face or respiratory system starts to swell or become inflamed have someone drive you straight to the ER. I see that 12 hours have passed by now and I hope your okay. Maybe this post will be of use to you in the future. Also, make a mental note of what you ate and avoid it in the future.
What did you eat? Sounds like some type of allergic reaction or possible food poisioning.
If it has not resolved by now; SEEK MEDICAL ATTENTION ASAP!
i would go to see your doctor,it could be your blood circulation,or an infection