Body neck hyperextension

Help please My chihuahua puppy (10 weeks old) attempted to jump on our 5-inch-high patio steps yesterday. Unfortunately, he sustained a fall, cried for a minute, and from then on, he started hyperextending his whole body and neck, was getting out of balance when he tried to walk, or stood as if he wanted to poop (his back legs were slightly bent). We brought him to the vet yesterday, and they didn't seem to find anything that needed urgent attention or care. An x-ray was not suggested as it's not easy to have this done with puppies, and he's not crying or yelping anything like that that would indicate a fracture. The neuro exam was done, and he responded very well. He was also checked for any pain and didn't react to it. They noticed the neck hyperextension, but they said that it could be just because he's trying to relieve the pain, and that possibly gives him comfort. He told me to closely monitor him and have him rest for the next few days. We were given pain medication to be taken for 4 days. They asked me if I'm okay with that plan, and of course I said yes and went home. He's eating and drinking very well, peeing and pooping as usual. He was fine since we came back home yesterday afternoon after seeing the vet. He woke up as he would usually, but just before lunch time, he started hyperextending again, and now every time he brings his head down, he yelps in pain.

Aw - that sounds uncomfortable!  How's his drugs regeime going;  could it be that the pain-killers are wearing off before the next dose?  If so, it might be worth asking your vet e.g. whether using a half dose twice a day, instead of the full dose once a day, would be acceptable (depends on the med) to make it last al full 24 hours.  Obviously always ask your vet before making any changes and definitely report the recurrence, in case they want to see him sooner.  Muscular injuries do not show easily on radiographs but bony ones do, so whether to radiograph often depends what the vet is expecting to find.  It isn't uncommon to prescribe e.g. a quiet life and pain releif (symtomatic treatment), to see if what they beleive to be a moderate soft-tissue injury heals on its own.  We would love to hear how things go from here.

(e.g. dogs can strain their necks rather like we might strain an ankle; if this is a muscular injury, it may improve with time, rain releif and rest).

It's good that you've already consulted a veterinarian. Since they have examined your puppy and recommended rest and pain medication, it's essential to follow their advice closely. Ensure that your puppy's activity is restricted during the recovery period. Avoid activities that may put additional strain on their body, such as jumping or playing vigorously. Keep a close eye on your puppy. Note any changes in behavior, appetite, or signs of discomfort or pain. If the neck hyperextension and yelping continue or worsen, contact your vet immediately for a reevaluation. Make your puppy as comfortable as possible during the recovery. Provide a quiet and safe space for them to rest. Keep them warm and ensure they have access to fresh water and food.