Brief answer....given below
Detailed answer...
Hello,
Thanks for the query.
Your husband is essentially having food poisioning along with
sunburn.
Both of the events are not related to each other.
Since most of the food poisionings are viral in nature,they are self limiting and tend to become all right in 3-5 days.
Treament required is plenty of oral fluids along with Advil or Tylenol for fever or headache.
A
proton pump inhibitor like PANTOPROZOLE 40 mg once a day in morning for few days can help in associated gas,acidity,
bloating and nausea.
For sunburn,treatment required is cool baths or cold compresses several times a day,plenty of oral fluids to prevent
dehydration,application of moisturising cream or non prescription 1%
hydrocortisone cream locally 2-3 times a day and taking Advil 2-3 times a day for couple of days.
In my opinion,there is nothing to worry as everything shall settle in few days.
I hope it helps,however you may revert to me for any further query.
Best of luck
Thanks