Mites: Refer to my earlier post titled "Attack of the Mites"
Green stools: A stool of this colour can indicate several different problems. A few are an excessive amount of bile in the digestive tract, indigestion of food, stress, an infectionary process, or it could be brought on by a change in food. Keep an eye on your hedgie, if you notice abnormal stools (take not of how much it is eating and drinking), do not feed anything new during this time, make a note of any new treats, supplements etc. that have been introduced into your hedgehog' diet. Keep the diet bland, if the problem persists, for more than a week; take your hedgie and a stool sample to your vet.
Diarrhea: Although diarrhea can be a temporary problem, if it isn’t brought under control quickly, it can be life-threatening. If you notice this in your hedgie, make sure he/she is drinking enough water so as not to dehydrate and keep the diet bland. Take note of whether or not you have changed anything lately; are you feeding your hedgie something new? Is his water coming from a different source? If the diarrhea lasts for more than a couple days, see your vet and bring a fresh stool sample with you. Diarrhea can be caused by much of the same things as green stool are, but could also be a sign of illness, infection, allergies, irritable bowel syndrome, internal parasites or other internal problems. You can give your hedgie a drop or two of Imodium AD, this will usually stop the diarrhea, but do not be fooled into thinking your hedgie is back to normal if it does, for this medication is just a temporary fix and does not address the main issue.
Constipation: If your hedgie seems a bit constipated, try putting him in a couple inches of warm water for quick relief. This will almost always do the trick. Following this, try feeding him a little canned pumpkin (unseasoned brand). Pumpkin almost always works well for constipation. Constipation could be a sign that your hedgie does not have enough fibre in their daily diet. In addition to canned pumpkin, other high fibre treats are pinches of powdered dry baby food on your hedgie’s kibble, sweet potato etc. If the condition persists, see your vet.
Tattered ears, dry skin: Possible issues that could cause these symptoms are mites, fungus or dietary issues. If mites and fungus infection are ruled out, apply either cocoa butter, Vaseline, vitamin E oil or aloe gel to ears several times weekly to soften them, and bathe hedgie in fragrance-free oatmeal based soap such as Aveeno, or put a drop of bay oil, vitamin E oil, or olive oil in the bath. Adding 1 drop of Spectrum Essential Oil to your hedgie’s food each night really helps dry skin and is very healthy for your hedgie as well (only 1 drop!), as it contains Omega 3, 6, and 9 fatty acids. Also dry skin can be more common in winter due to indoor heating.
Crusty feet: Occasionally, you may see a hedgehog with a crust-like formation on its feet. One possible cause of crusty feet is a fungal infection. Please see your vet for proper treatment.
Lethargy, wobbliness, cold to touch: Immediately warm your hedgie up by placing him under your shirt. Once he is warmed sufficiently, increase room temperatures and provide some additional source of heat in the cage such as a Snuggle safe Disc, or a heating pad under the cage. Keep an eye on your pet to make sure he isn't trying to seek out the cooler end of the cage to try and hibernate again. Also make note of how often your hedgie is running on their wheel, playing, eating and drinking. Declines in these activities are also possible signs your hedgehog is too cold, older or sick hedgehogs are also more likely to become chilled. If this problem persists, see your vet as it may be an indication of illness.
Wobbliness or paralysis, with gradual onset: Several possible causes, one of the possible health issues is a neurological disorder called Degenerative Myelopathy otherwise known as Wobbly Hedgehog Syndrome. This is a degenerative disease that unfortunately is incurable, and eventually leads to death. This does not mean that your hedgehog cannot have a good quality of life with you for a time before this end. See your vet immediately, for more information visit: http://www.angelfire.com/wa2/comemeetmyfamily/wobblyhs1.html. These symptoms could also be a sign of other neurological, spinal or liver issues. In any case, a vet should be contacted immediately.
Wobbliness or paralysis, rapid onset: Possible stroke. See your vet immediately.
Lumps or masses under skin: Possible cysts, tumours, or even pregnancy. See your vet!
Yellowing under armpits: Cause; obesity, which could lead to FLD: fatty liver disease, a very serious and often fatal disease, if not treated. Increase your hedgehogs activity (does he have a running wheel?). Allow supervised free-roaming. Put your hedgehog on a low fat diet and reduce its daily caloric intake.
Quill loss: There are several possible causes for excessive quill loss; mites are the most common cause, followed by dietary issues, allergies, illness and or hormonal issues. It is important to note that baby hedgies go through a "quilling" process whereby they lose their baby quills and adult quills grow in to take their place. During this time, it is common to find several quills dropping every day, and your hedgehog at this time will usually be quite irritable. For more information refer to an earlier post titled “The Trials of Quilling”
Loss of appetite: Can be brought on by many causes, but if problem persists, see your vet right away. Have your vet check the teeth to rule out any problems there. It is important to note that sometimes a new hedgie will not want to eat when you first get it. Make sure you find out what that hedgie has been eating prior to your acquiring him and offer him what he is used to. If the diet he is on is less than satisfactory, slowly wean him off of it and onto the new. Pay attention at this time to whether or not the hedgie is drinking adequate water. A hedgie who isn't drinking, will usually not eat either. Dehydration can set in rapidly and can be fatal. Was he used to drinking out of a bottle or a bowl before you got him?
Discharge from ears: See your vet. Possible ear infection, mites, or head injury.
Wheezing, nasal discharge: See your vet! Possible upper and or lower respiratory infection. Keep your hedgie warm and dry till you get to the vet.
Eyes; watery, discharge, inflamed: See your vet immediately. Possibly resulting from an injury and or infection process, allergies, or a foreign object lodged under the eye lid.
Open sores: Possibly mites. See your vet!
Swollen jaw, inflamed gums: The most common problem is Dental disease i.e. an abscess or cavity. Have your Vet do a through dental exam, and give the appropriate treatment. Another key indicator is if your pet seems to have trouble eating hard food, it may be too painful for them to chew it. A swollen jaw can also indicate a more serious condition, such as cancer or a benign cyst/tumour.
Cancer: Various forms of cancer are, unfortunately, very common in hedgehogs. Feeding the best diet, void of chemical preservatives, artificial colors and flavours can help, but there are many other factors which influence this disease.
Swollen feet and ankles: This could be a sign of injury or infection to the leg, check your hedgies legs for any string or hair wrapped around them cutting off circulation. This could also be a sign of stress to the joints, caused by excessive running or a sprain. Double check the wheel your hedgehog uses, make sure it doesn't have spokes or it isn't too small for your hedgehog.
Blood in the cage: Obviously your concern should be do they have an open wound? Torn nails are especially prone to bleeding excessively, things such as corn starch or quickE stop works well for treating nails. If the blood is mixed in the urine this could be a sign of a bladder or kidney infection. If the blood is on its own it could be a sign of a uterine infection or cancer in female hedgehogs. Another symptom of uterine infections are a lack of eating, excessive drinking, and change in temperament. You should see your vet ASAP, my one female had a uterine infection (luckily there were no lumps upon inspection) and this was treated with oral antibiotics twice a day for 2 weeks. I also had to force feed her a soft wet cat food high in protein and fat by syringe (meant for cats and dogs who haven't been eating, use a VERY small amount because it's very rich) to compensate for the 4 days she hadn't been eating.