Dog Allergic Reaction Questions?

If you got a steroid shot and your dog is reacting this quickly already after that shot to something, this is a serious systemic reaction. Benadryl rarely helps in this situation. Antihistamines don't work as well on dogs as in humans. Steroids only cover the symptoms, but are useful in an emergency situation. Steroids can also exasperate a situation that may not be allergies, but could be bacterial or yeast in nature. This sounds like an allergic reaction though since it came on so quickly and swelling was involved. Your best bet is to limit her outside time. Bathe her in an antifungal anti-itch antiseptic wash. I wouldn't use oatmeal. Oatmeal can also make a yeast situation worse. After bathing her, rinse her in an apple cider vinegar/water rinse. This will help with itching and will soothe her. It also helps keep yeast down. Also, putting a shirt on her may help her from itching. Sounds crazy, but it works. I would just keep her cool and don't allow outside time unless it's to go potty and wipe her down when she comes in with a cool rag or baby wipe. Since this was such a quick reaction to something, I would guess it's not a pollen allergy. Did she eat something new? Has she been bitten by anything? I would NOT get another steroid shot either. It's very hard to help a dog with allergic reactions. I have just been through this with my dog for two months. He didn't swell up though. Food was first suspect. Environmental was next. I narrowed it down to the flea/tick topical I was applying.

Because of the sudden onset of this, I'm thinking it isn't typical chronic allergies (like pollen, grass)...check all over your house...for insects, poisons, or pills she could have been exposed to... any new cleaning products or scented candles or sprays you've used in the last 24 hours?

The problem with this is it can effect her throat and close off her airway becoming life threatening.

Give her a bath in neem shampoo if you can find one at a petstore or make a bath with soaked oats but don't leave her alone until the reaction settles down.

It really sounds as though your dog is having an allergic reaction to something, hot itchy bumpy skin and a rash (particularly hives) are indicative of an allergy.

What he's reacting to could be more difficult to determine. Dogs can suffer from inhalant allergies (similar to seasonal allergies etc. in humans), contact allergies (to chemicals, bathing products, laundry detergent, fibres etc.), flea allergy (an allergy to flea saliva) and dog food allergies.

The majority of allergy symptoms involve the skin and include hives, rashes, hot spots, excessive itching/scratching and/or licking, patchy hair loss and similar.

I suggest you have your vet take a look at him again, to rule out any other cause for his rash/hives. There are lots of natural and OTC products you can use to relieve any itching or redness. If necessary your vet can do some allergy testing and prescribe medication for your dog. Unless his reaction is severe though this may not be necessary.

You can find lots of info. about dog allergies by typing in dog allergies and hives.

Other than giving her Benadryl and an oatmeal bath, I can't think of anything. Sorry for you and your dog.

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take him to the vet