Why did my dog get lumps on her head that disappeared after being outside?

This is probably an allergic reaction due to an insect bite or a plant outside. those reactions tend to resolve within 48 hours without treatment. if the swelling becomes too large or if your dog is lethargic, take her to the vet in order to get an antihistamine injection.

Poor guy. He is likely having an allergic reaction to something he was exposed to outside. You can give him an antihistamine to see if this improves things. As long as his breathing is ok and there is no swelling around the neck, he is likely to be fine after 12 hrs or so as the reaction subsides. You can also try bathing him in an oatmeal or hypoallergenic shampoo to help calm down the skin. If the skin reaction does not improve or worsens by tomorrow then have your vet take a look at him and they can administer stronger medications to subside the skin reaction. It will take a bit of investigating on your part to figure out what he could have been exposed to to cause him to break out into hives.

Hi and thanks for your post on Petco Pet Education Center, formerly Petcoach. Oh dear, this sounds like Bella has hives indicating an allergic reactions to something she was exposed to. Please take her into a veterinarian right away for treatment. She will need antihistamines and a steroid. Whatever she was exposed to needs to be identified so she does not have a reaction like this again. Best of luck!

If these just arose out of nowhere I would be concerned they are hives and she is having an allergic reaction. Since they are on her face, I would consider this an emergency, so it would be recommended to take her in to the emergency clinic right away, where they can give her a shot of benadryl and a steroid shot to stop the reaction. In severe cases of allergic reactions the face can continue to swell and the swelling can extend to the airway, becoming life threatening, and we don't want that to happen!

They look like hives. She likely was bite by a bug and is experiencing an allergic reaction. I recommend you have her seen by your veterinarian to examine the areas and determine if medications are needed if the hives last longer than 2 hours or if you notice vomiting, diarrhea, facial swelling, or worsening hives.

This is most likely a sudden allergic reaction to something and should resolve within 12-24hours. If he becomes distressed or uncomfortable, contact your vet for medications to help - they may also prescribe antihistamines to have at home should it happen again also!

If you know she is beef allergic then yes it could certainly be the cause. If she is bright in herself and not sick I recommend monitoring her, the bumps should go awaay if it's allergy. If they don't start improving within 24 hours visit the vet in case it's something else.