I apologize that no one has responded to your question sooner. Different experts come online at various times. I just came online and saw your question. My name is XXXXX XXXXX I'm a biologist with a special interest in small animal health. I'm sorry to hear of Raindrop's problem.
As hamsters get older, they become more prone to some diseases that can't be treated. Stroke is one of those. Two of the more common causes of hind leg paralysis are a spinal injury and stroke. Since Raindrop is getting a bit up there in age, a stroke seems the most likely possibility. But whether it is a stroke or an injury, the measures you can take are the same.
Many hamsters recover from strokes over a period of 2 to 3 weeks. You should remove the wheel and any other toys she may attempt to climb on to decrease the chances of injury. It's important that during the recovery time, your hamster be kept warm enough, and gets plenty of food and water.since she can't get around well, you may have to hand feed and water her for some time. You can give water from a syringe into the side of his mouth. She may be able to drink on her own if the water bottle is low enough. You should place the cage in a quiet area of the house and let her sleep all she wants. The less she is disturbed, the better.
Strokes do sometimes leave permanent effects, such as a tilted head, and sometimes hamsters do die from strokes. There isn't anything else you can do beyond the above steps because there is no veterinary treatment for strokes in hamsters. If you feel that it may not have been a stroke, then you may want to have a vet check your hamster over, but the symptoms you're seeing do point to a stroke.
Other possible causes of a hamster dragging its back legs include a broken bone or severe constipation. Check to be sure Raindrop is passing normal droppings. If not, that would also be cause for a vet visit. Treatment for a broken leg would be similar to that for a stroke. Hamster's legs are too tiny to set.
If you decide to see a vet, the following links will take you to directories of vets who treat small rodents. At the first site, you'll come to a log-in page. Sign in as 'member' and use 'member' as your password XXXXX well.http://www.rmca.org/Vets/index.php?action=listhttp://www.ratfanclub.org/vetref.html
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