When the foot is swollen with insect bites, the first step in treatment can be a wet application of 2% boric acid solution, or a cold wet application of a decoction of fresh horsetail, honeysuckle, forsythia, and dacquoise leaves, 2 times/day for 20 minutes/time. After the redness and swelling subsides, then apply Denide ointment 2 times/day or Mometasone furoate ointment 1 time/day. During other treatment, 200 ml of compound glycyrrhizic acid monoammonium S chloride injection can be given sedately once/day for at least 3-5 consecutive days, or one intramuscular injection of compound betamethasone injection can be given temporarily once. You should also take oral antihistamines, such as levocetirizine hydrochloride capsules, one capsule every night, during the treatment period. Or Olopatadine hydrochloride tablets one capsule in the morning and one capsule in the evening. You need to avoid scrubbing the affected area with salt water, alcohol, or vinegar during the treatment period to avoid aggravating the affected area.