Welcome and thanks for posting your query to HCM.
It appears from your query that your husband got insect bite hypersensitivity
. It is a common phenomenon after the bite of any kind of insect including bee or wasp or bug. It is more commonly associated with redness
with swelling which increase within hours with pain and itching over the same.
As the lesion is now oozing so there is high possibility of secondary infection in the same. To prevent the secondary infection your husband is correctly been prescribed with cephalosporin
antibiotics which are quite effective.
It is requested to you to kindly start with the antibiotics to prevent any further complication over the area.
Along with it kindly do not pinch, pop or squeeze the area. Do cold
water compressions over the affected area and can apply calamine
lotion over the red areas.
Hope these informations will help.
With good health wishes"
Dr Sanjay Kumar Kanodia