Experienced and professional animal trainer provide their insights in answering this question :
A. Could be bites most likely is flea allergy. If continues after flea treatment then see your vet as there are lots of mites etc that can cause this and would need tests.

How to Identify Common Pet Problems ?

Our sources include academic articles, blog posts, and personal essays from experienced pet care professionals :

The most common causes of itchiness in dogs include atopy (environmental allergies), food allergies, parasites (fleas, mites), and bacterial or yeast infections. Hay-fever in people is similar to atopy in dogs. Allergies in the air that affect humans can also affect dogs.
Flea allergy dermatitis, seasonal allergies or atopy, food allergies, contact dermatitis (e.g., soaps and perfumes), and sarcoptic mange (mites) are some of the most common causes of pruritus in dogs. “Pruritus due to skin disease is one of the most common reasons dog owners seek veterinary care.”
Stress, and, more so, chronic stress is known to be the primary feline hyperesthesia triggers. A stable stress-free environment is vital for cats diagnosed with this syndrome. Other factors, such as fleas, myositis, seizures, and spinal or neuropathic pain, may also trigger it.
Teach your dog that they receive no attention for jumping on you or anyone else. You can turn your back and only pet your dog when all four paws are on the floor. Teach your dog to do something that is incompatible with jumping up, such as sitting. They can`t sit and jump up at the same time.
The signs of a skin infection in pets include dry, crusty skin, redness, a sour odour, pustules, hair loss, and itchiness. However, these symptoms can also be attributed to other skin conditions, therefore it is vital to consult your vet for diagnosis.
Apoquel starts relieving allergic dog itch and inflammation due to skin allergies within 4 hours — and controls it within 24 hours. The #1 prescribed medicine for allergic itch in dogs. Can be used for long-term maintenance or short-term therapy in dogs 12 months of age and older.
The condition is most commonly identified by frantic scratching, biting or grooming of the lumbar area, generally at the base of the tail, and a rippling or rolling of the dorsal lumbar skin. These clinical signs usually appear in a distinct episode, with cats returning to normal afterwards.
Aside from osteoarthritis, other painful conditions can also lead to a reluctance to jump. Injuries, infections, inflammatory conditions and tumors are just a few of the many potentially painful conditions in felines. The bottom line is any of those conditions warrants a prompt veterinary visit.
Feline hyperesthesia is a condition in which your cat has increased sensitivity in parts of their skin. Your cat may react when you try to pet this area. The word hyperesthesia means increased sensitivity. When you pet your cat, they will react as if in pain. Their skin may even twitch when touched.
Suggested Articles. Hyperesthesia is an extreme sensitivity in an area of a cat`s skin, almost always on the back, and often in the area right in front of the tail. This condition is often noticed when owners go to pet this area and their cat suddenly reacts.
For cats that do become sick, the illness usually consists of fever for 2 to 3 days. Symptoms requiring veterinary care include fever lasting more than 3 days, vomiting, lethargy, red eyes, swollen lymph nodes, or decreased appetite.
Demodex and Sarcoptes mites live within the skin and are too small to be seen with the naked eye. Ear mites are also so small that it`s unlikely you will be able to see them. Your vet can examine samples under the microscope to look for mites.
The itching is probably caused by sensitivity to the mites` droppings. Initially, infested skin will erupt with small, solid bumps. Because the dog scratches or bites itself to relieve the itch, these bumps and the surrounding skin are often damaged, causing thick, crusted sores.
Just as with humans who bite their nails or develop other obsessive habits when nervous, dogs can turn to itching when they are experiencing anxiety. If, for instance, you`ve noticed your dog is itching, chewing, or biting at their skin just after you`ve returned to work, they could be experiencing separation anxiety.
A cluster of nerves located under the skin makes up the dog sweet spot. When you scratch your pet`s tummy and hit this spot, these nerves get activated and send a message to the hind leg, via the spinal cord, to start kicking in an attempt to dislodge the source of irritation.
Topical antibacterial soaps and shampoos can help such as KetoChlor Shampoo or Malapet Shampoo. It is often necessary to shampoo pets once to twice a week, while also using any prescribed antibiotic therapy for maximal chances of recovery. We`ll contact your Vet to verify.
Seek a veterinarian as soon as you notice any of these common signs of skin infection. The longer the skin infection goes untreated, the more serious it will become. The skin will typically not clear on its own without proper treatment.
Red or inflamed skin. Pus-filled lesions on the skin. Excessive licking, itching or chewing. Patchy fur with peeling, moist or crusty skin.
When dog scratching gets out of hand, it is often the result of allergies to food or environmental triggers, including mold and pollen. Dogs may also develop a skin irritation called contact dermatitis when they encounter substances like pesticides or soap. Boredom or anxiety.
Hypoadrenocorticism is an uncommon disease in dogs, and it is caused by a deficiency of essential hormones that are made by the adrenal glands. Also known as Addison`s disease, the clinical signs may appear as vague signs of illness that come and go.
What is pyoderma? Pyoderma is defined as a bacterial skin infection. Pyoderma may also be referred to as impetigo, especially in young puppies.
The Lykoi (commonly called wolf cat or werewolf cat) is a breed of cat derived from a natural mutation causing a form of hypotrichia found in domestic short-haired cats. The mutation has occurred in domestic cats over the last 20 years.
It occurs when the levels of potassium in the cat`s blood drop below an acceptable level. Potassium is a necessary electrolyte found in the blood that is required for the normal function of muscles and bodily systems. Hypokalemia can occur in cats that are sick or suffering from fluid loss due to vomiting or diarrhea.
Muscle trembling normally occurs in response to irritants or emotions and is not necessarily related to any medical condition. It is also possible that trembling or twitching might be caused by a genetic condition and is untreatable, but not dangerous.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

Q. Will jump like something stung her, is itching like crazy, eyes watering bad, chews til there is a bloody spot
ANSWER : A. Could be bites most likely is flea allergy. If continues after flea treatment then see your vet as there are lots of mites etc that can cause this and would need tests.

Q. Weak, discharge from eyes, swelling on right eye, does not want to open eyes. What is wrong?
ANSWER : A. If the discharge from the eye is green or yellow in color, it can indicate a secondary infection. Swollen eyes can be caused by a number of things ranging from allergies to infections, to injury to the eye itself or surrounding areas.

It is best to have your pet’s eye examined by your local vet. They will most likely wish to place a stain in the eye that can check for damage such as cuts or scratches. An ointment can then be given to help reduce inflammation, pain and take care of infection.

Until you can get to the vet, be sure to not let your pet scratch or paw at their eye as this can make things worse. You can also use a warm wet washcloth to gently remove any debris and allow the eye to open some, providing relief. However, if symptoms worsen, or the swelling travels to the face, head or neck, it may indicate a serious allergic reaction which should be treated immediately.

Q. Yellow lab F, approx 9-10 yrs. Sudden onset of extreme redness in one eye, now seems to have spread to other over 24-48 hrs. Healty, active, good app.
ANSWER : A. This could be a bacterial conjunctivitis. Dogs can pass these infections around, just like people can. The fact that it started in one eye and moved to the other suggests infection, but I can’t rule out something more serious like glaucoma. I feel like anytime a dog’s eye gets acutely red like this it’s cause for alarm, and needs to be checked out as soon as possible. Like I said above, it’s likely a simple eye infection, but get it checked out to be sure.

Read Full Q/A … : Vetinfo

Q. I was told by my vet that my dogs cherry eye was caused by something hitting his eye when he was poking around under a bush. I was told surgery needed
ANSWER : A. Prolapsed gland of the eyelid refers to a pink mass protruding from the animal’s eyelid; it is also called a “cherry eye.” Normally, the gland is anchored by an attachment made up of fibrous material. The most common sign of “cherry eye” is an oval mass protruding from the dogs’s third eyelid. It can occur in one or both eyes, and may be accompanied by swelling and irritation. He may have acquired it by getting an injury to his eye but this isn’t the case sometimes. Sometimes there is a weakness in the fibrous attachment.

The veterinarian will review the mass in the dog’s third eyelid and determine if there is an underlying cause for the condition. The diagnosis of the prolapsed gland could be scrolled or everted cartilage in the third eyelid, abnormal cells in the third eye, or a prolapse of fat in the dog’s eye.

Treatment often includes surgical replacement of the gland in the dog’s eye, or removal of the entire gland if the condition is severe. Conversely, if medications are recommended, they are typically topical anti-inflammatory drugs that are effective in reducing swelling.

Q. My Pomeranian has a very sore I could be pinkeye or what else
ANSWER : A. Your question got a little jumbled. Yes, dogs can get something like “pink eye”, meaning infectious conjunctivitis. It typically causes eye discharge that’s yellow or green, and a red eye and sometimes swelling. The problem is that many eye diseases present in a very similar fashion, and it could be something more serious that conjunctivitis, like a corneal ulcer or glaucoma. I always recommend that all eye problems be checked out by a veterinarian, as it can be very dangerous to delay treatment in some of the more serious eye diseases.

Q. How do I get my dog to stop chewing on things? I kennel her when I leave for a few hours, but I can’t go to the mailbox without her eating something.
ANSWER : A. If she’s young, then this is just normal puppy behavior. Don’t worry about it. The thing about puppies is, they explore using their mouths. If your puppy grabs a coat hanger, or a slipper, you should roll up a newspaper, and smack yourself on the head with it for leaving those things out.. your puppy is going to explore things, that’s normal! It is 100% up to YOU to keep those things away from your puppy when your puppy is unsupervised… even for just a moment.

Remember to never scold your puppy for grabbing these things. They are just curious little cuties, and they don’t chew things up to bother us.. Dogs do not have intentional thought, so they aren’t ever doing anything ON PURPOSE to us.. The most important thing you can do when your puppy is chewing something you don’t want her to be chewing is TRADE her the inappropriate item with a toy of hers, so she understands “no honey, that isn’t what puppies chew on… THIS is what puppies chew on!” and then begin playing with her using her toy to show her that TOYS ARE FUN.. Way more fun than a boring ol’ coat hanger.

Another helpful thing you can do is have two bags of toys. In each bag is many different kinds of toys. Lots of chew toys, lots of soft squeaky toys, lots of rope-type toys, a bunch of balls.. All kinds of things! For one week you have bag#1’s toys out for your puppy to play with.. At the end of the one week, you collect those toys, and you bring out bag#2! The toys will be more interesting/feel like new to your puppy, which will in-turn, make her chew less inappropriate things. Her toys are too fun to care about that dumb Wii-mote that you left laying around.

Hope this helps!

Q. My dog has no fleas, but is scratching and licking continually. He has been through a round of prednisone and it hasn’t helped. What can I do?
ANSWER : A. Itching can be caused by more than just external parasites, and if your dog is already on a flea medication, then it is possibly not the case. Itching can indicate anything from allergies to even minor skin infections causing problems. If your dog has been treated with prednisone (a steroid that inhibits the immune system) and it did not help, then looking at other options may help.

Food allergies are very common in dogs and can present with itching and licking all over the body rather than on just one spot. Common food allergens include ingredients such as wheat, corn and soy products, however dogs can be allergic to almost anything! Starting a food trial of an allergen-friendly diet from your vet or pet store that avoids these common ingredients may help. The food should be switched over a period of 7-9 days and then given about a month to decide if it is helping.

Small skin infections or yeast in the skin can also cause itching, however this itching is often more specific to a certain area of the body (such as the toes, or base of the tail). Your vet can perform a skin scraping of the area to be cultured at a lab to look for any yeast or bacteria. If they are present, a medication given either orally or placed on the affected area can clear up the infection.

In some cases, licking and chewing can actually be due to a boredom or anxiety behavior. Dogs may lick one spot obsessively to the point of creating sores or wounds in the area. Stopping your dog from licking and chewing either through the use of dog booties, no lick strips, T-shirts or even Elizabethan collars can break the habit and give the area time to heal. Licking and chewing can also cause the spread of bacterial infections so should be deterred even if not behaviorally caused.

Q. 2 month old Bulldog. While playing gets TOO rough:gripping hand REALLY tight/growling/shaking to the point of drawing blood. Aggresive?Normal?HELP!!
ANSWER : A. For the most part, this sounds pretty normal to me. English Bulldogs can be like this. What you can do is teach him bite inhibition. He needs to know that biting gets him nothing. Each and every time he nips, even gently, you immediately yelp like a puppy would, stand up, cross your arms, and ignore your puppy. Once he is ignoring you, go back to calmly playing with him WITH A TOY. Remember to always use a toy when playing with/petting/interacting with puppies. They will be teething very soon, and they don’t understand that biting you is inappropriate, so using a toy to redirect their attention is important. He needs SOMETHING to bite, or else he will choose your hand. Give him more options.

Another thing you can do is have a toy that YOU OWN. This can be a soft braided rope toy or something of the like. Dot not allow your dog to have this toy whenever he wants. This toy disappears when you are done playing with him with it, and reappears when you want to play. Never allow him to “win” games with this toy. Eventually, the toy will hold so much meaning, when he sees it, he will be instantly interested in the toy instead of your hands.

It also helps to have two bags of toys. Bag#1 is full of chew toys/rope toys/soft toys/etc. It comes out for one week, and then disappears and out comes Bag#2. Bag#2 has the same types of toys in it. This will keep the toys feeling like “new” to your pup and make him less likely to chew on you during play!