In an allergic manner; because of allergies.(adverb)
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Use "allergically" in a sentence
"In 2008, six years after my first pediatrician insisted that Eden wasn't vomiting incessantly and allergically to his milk-based formula, the American Academy of Pediatrics published a report defining Eden as an infant at risk based on our family history of allergies."
"They react allergically to what they see as mannerisms in his playing, the love of extremes."
"I love humus and I wish I could try your recipe but I have to be VERY careful as I often react allergically to chickpeas..."