Brief Answer:
Eyes Stinging

Detailed Answer:
Hello. I just read through your question.
Generally, in pediatrics, we can attribute these type of things to harmless viral illnesses. Little improvement each day, which seems to be happening here, makes this more likely. If it continues to improve and then go away completely, there is no reason to be concerned.
In this case, your concern about a spider bite is reasonable to consider. Sometimes you can find evidence of a bite somewhere on the body (a bite mark), but not always. Still, as long as there is daily improvement, there is no worry. The inky concern would be to do what is necessary to prevent future bites.
If the symptoms begin to worsen, it's probably still a harmless viral illness. However, in this case, I recommend consulting with your doctor.

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