Why is my dogs skin so red? Here’s What to Do Next

Common Signs of Skin Problems for Dogs

Find out what could be causing your dog’s skin condition and what you can do about it.

A rash (redness or irritation) can occur on any part of your dog’s skin but is commonly seen on the belly. Common causes of a dog’s belly rash are:

  • Contact dermatitis, which is a reaction to coming into contact with something irritating like poison ivy, fertilizer, or lawn chemicals
  • Insect bites
  • Allergies
  • If contact dermatitis is suspected, wash the affected skin to remove any of the irritant that may still be present.

    For a rash caused by insect bites that doesn’t appear to be bothering your dog, no treatment is necessary. The spots should go away on their own.

    For a rash caused by insect bites or allergies that is bothering your dog, give your dog a cool bath using a dog shampoo containing colloidal oatmeal. Contact your veterinarian if the rash persists.

    Scabs, or crusting of the skin, can be the primary problem, or it can occur after a short-lived pustule (or pimple) pops and crusts over. Scabs on dogs can be caused by:

  • Puppy impetigo
  • Ectoparasites (mites and fleas)
  • Pyoderma (skin infection; wrinkly dog breeds can have skin fold pyoderma)
  • Treatments will differ, but they may include medicated shampoos or ointments, and possibly oral antibiotics or an antiparasitic medication.

    Red spots on a dog’s belly during the late spring and early summer can be caused by black fly bites. These flat, red spots typically do not bother dogs and can be left untreated.

    Black fly bites can be confused with ringworm spots, which do require treatment in the form of topical or oral antifungals.

    Black fly bites will appear suddenly, be accompanied by other bites, be confined to the belly, and not bother the dog.

    Ringworm, on the other hand, can appear anywhere, may or may not irritate your dog, and usually starts in one area as opposed to several areas appearing at once.

    Raised red bumps can be caused by several different things. If the bumps are smaller and include crusts, they may be caused by a bacterial or fungal skin infection called folliculitis. This is typically treated by your veterinarian with oral antibiotics and possibly with medicated shampoos or ointments.

    If the bumps are larger and flatter with no crusting, they may be hives caused by an allergic reaction. They are usually treated with an antihistamine and/or steroids. While usually not life-threatening, the swelling caused by an allergic reaction can obstruct the airway, so it’s important to contact your veterinarian immediately.

    Along with itching, redness and irritation are often the most common signs of allergies in dogs. Finding the cause of the allergic reaction, whether it’s to a food, fleas, or something in their environment, is the most effective way to treat the irritated skin.

    While the root cause is being discovered, and to give your dog temporary relief, a gentle oatmeal dog shampoo or oatmeal bath can be used to soothe and hydrate the skin.

    A hot spot is a moist, irritated area of skin, usually with hair matted over it. Hot spots are caused by excessive licking or chewing of an area. The excessive licking introduces bacteria to traumatized skin, causing the hot spot.

    Hot spots are more common in hot, humid climates and will sometimes arise after a dog has been exposed to moisture from swimming or muddy/rainy weather. They are also more common in dogs with a dense undercoat.

    Uncomplicated hot spots can be treated by carefully clipping the area to allow the skin to breathe and cleaning the area with a diluted chlorhexidine solution. You can prevent hot spots by keeping your dog groomed and drying them after swimming or being in the rain.

    Flaking of your dog’s skin can be caused by more serious conditions like seborrhea, where a dog produces too much sebum, or cheyletiellosis, a condition caused by a mite that’s also known as “walking dandruff.”

    But these flakes can also simply be a sign of dry skin. Ensuring that your dog is fed a good-quality food that is high in omega-3 and omega-6 fatty acids is a good first step in maintaining their skin health. If the flaking continues, consult your veterinarian.

    The two main causes of itchy skin are allergies and external parasites like fleas and mites.

    Itchiness due to allergies usually involves a dog’s feet, armpits, flank, ears, and groin. Mild allergies or itchiness can be treated with a soothing dog shampoo containing oatmeal. Switching your dog to a sensitive-skin diet (which often contain fish as the main protein source and are high in omega-3 and omega-6 fatty acids) can also help.

    Fleas will more commonly cause itchiness at the base of the tail, on the stomach, and along the inner thighs. Itchiness due to fleas and mites (that cause sarcoptic mange) will needed to be treated with medications specific to the type of parasite, such as a flea preventative.

    The causes of hair loss, excessive shedding, or bald patches in dogs are extremely varied, including:

  • Allergies
  • Ectoparasites like fleas and mange mites (demodectic mange)
  • Cushing’s disease
  • Pressure sores, most often seen in large breed dogs, will cause hair loss at bony pressure spots like the elbow
  • Genetics
  • Stress
  • Poor nutrition
  • Most causes of hair loss in dogs require a trip to the veterinarian to diagnose the cause. If you suspect pressure sores, ensuring your large breed dog has a cushioned place to lie down can help prevent the pressure sores.

    Sores that do not have an obvious cause or are not healing properly could be the sign of a serious underlying condition such as cancer or another disorder that is preventing proper healing. These areas should be kept clean and seen by your veterinarian.

    Dark spots, or hyperpigmentation, can be secondary to chronic inflammation, in which case, they can clear up (slowly) if the underlying condition is treated. Dark spots on dogs can also indicate a hormone-associated disorder or be a sign of skin damage from the sun, trauma, or constant friction.

    See your veterinarian to diagnose the underlying cause of dark spots.

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    What is a Skin Issue?

    A skin “issue” is a very broad term and can include both the skin and the coat. According to the Merck Veterinary Manual, skin issues can be divided further into dermatitis, or inflammation of the skin, and pruritus, or abnormal itching [1]. Skin issues can affect only the coat, the top layer of the skin called the epidermis, deeper in the skin layers such as the dermis and subcutaneous layer, or all layers at once.

    (Photo Provided by Merck Veterinary Manual [1])

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    Rashes on a dog’s belly may look alarming and uncomfortable, but they are quite common. These dog belly rash bumps and redness you see can have a variety of causes, from a simple bacterial skin infection to a more serious underlying condition, such as Cushing’s disease.

    If left untreated, your dog’s belly rash could develop into an unpleasant skin infection that will require veterinary care and cause your dog discomfort.

    Here is what you need to know about your dog’s belly rash, including the causes, symptoms, and treatment options available.

    Your dog’s skin protects his body from the outside world, acting as a barrier between his internal organs and harmful organisms. We might think of skin as being tough and resistant, but it is actually very sensitive to changes in both your dog’s body and the environment.

    One of the ways the skin shows this sensitivity is through rashes.

    There are several causes of rashes in dogs:

  • Skin infections
  • Inflammatory conditions
  • Allergies (which many times are genetic)
  • Parasites
  • Genetic
  • Hormonal imbalances and endocrine conditions
  • Environmental causes (such as poison ivy or other plants)
  • Sometimes cuts can open the skin barrier to infections. Many of the causes of rashes in dogs are the result of bacterial, fungal, or yeast infections.

    Bacterial skin infections are called pyoderma, which translates from Greek to “pus” and “skin.” Pyoderma typically causes lesions that look like pimples and can also cause crusty, dry, flaky skin. Hair loss and itchiness can also occur.

    Your dog can get pyoderma as a result of trauma to the skin, like an abrasion or cut, excessive moisture, or as a secondary condition. Puppies are prone to puppy pyoderma in areas without a lot of hair, such as their underarms and groin. Hereditary factors can also play a role in skin infections for both puppies and adult dogs.

    Fungal infections, such as yeast infections and ringworm, are also common. Yeast dermatitis is a skin condition caused by yeast infections. It is also known as Malassezia dermatitis and is caused by the fungus Malassezia pachydermatis. Symptoms of this condition include thickened skin; changes in skin pigmentation; a musty smell; itching; redness; scaling, crusty, flaky skin; and chronic ear infections.

    Ringworm is characterized by circular lesions, which can appear red and scabbed. Hair loss is common, and while these rashes are usually not itchy, they can become inflamed, and the condition can be passed to people and other pets.

    Allergies can also cause rashes on your dog’s belly. Environmental allergies, like contact dermatitis or reactions to something on the ground like fertilizer, cleaning products, poison ivy, or other irritants, flea allergy dermatitis, and food allergies, food sensitivities, and food intolerance can lead to itchy bumps and rashes. When your dog itches and scratches, he opens his skin up to infections, which can lead to a rash or complicate an existing rash.

    Allergies can have a wide array of symptoms, from digestive upset to skin conditions such as itchiness, hair loss, redness, irritation, and chronic skin infections. Talk to your veterinarian if you suspect that your dog might have an allergy.

    Pests and parasites could also be the cause of your dog’s rash. Fleas, mites, and ticks can cause irritation, exposing your dog to bacteria, yeast, and fungal infections. Demodex mites, walking dandruff, flea allergy dermatitis, and sarcoptic mange (caused by the Sarcoptes scabiei mite) can all cause rashes on your dog’s skin, including her belly and groin area.

    Golden Retrievers, for instance, can get a rare condition called congenital ichthyosis, which causes scaling of the skin on the abdomen. Arctic breeds, for example the Samoyed, can develop zinc-responsive dermatosis, and Cocker Spaniels are prone to primary seborrhea (dandruff).

    3 Dog Yeast Infection Home Remedies and Treatments (2022)

    We arent the only ones who get skin rashes. Though they can be more difficult to see under all that fur, our dogs can get rashes, too.

    A dog skin rash may be nothing more than a minor irritation. However, if left untreated, that rash can progress to serious skin problems. Were going to review common causes of dog rashes and help you learn how to treat them.