Can a child overgrow an allergy to an insect venom? if fire ant causes rashes, and swollen ear does it mean a child has severe allergy?

How old is ur child?: The reaction you described differs if before or after 5 years of age, please avoid exposure, keep an epinephrine pen and antihistaminic handy, check with an allergist/immunologist, might need desensitization according to clinical judgement after history and examination. Check aaaai.org or acaai.org for an allergist in your area, best wishes