Browsing tag: itchiness

Ask a Vet Online – “My dog gets frontline flee treatment ..”

Question from Tracey Newall

My dog dexter gets frontline flee treatment but recently he seems 2 scratch more i havent found anything but his skin flakey

Answer from Shanika Online Vet

It is good to hear that you are treating Dexter for fleas; fleas are definitely high up on the list of causes for an itchy dog. Dry flaky skin may well be as a result of scratching due to flea infestation but can also be affected by allergies and medical conditions.

It is really important to remember that a pet suffering from a flea allergy or irritation does not need to be full of fleas. All it takes is one flea to bite your pet to set off the allergic reaction cascade that leads to the skin being irritated.

What is a flea?

Ctenocephalides canis or felis (the dog and cat flea) are a small wingless parasitic insect that live on our pets and in the environment.  Fleas can jump but they can’t fly, they need blood feeds to survive and a large proportion of the flea population are in the environment as oppose to on your pet.

Where are the fleas coming from?

Fleas live on animals as well as in the environment. The flea population consists of adult fleas, immature larval stages, dormant pupae and then eggs, as you move down the list the numbers increase significantly which is why we refer to them as a pyramid.

Fleas in the environment, by this we mean anywhere a pet with fleas has been, the warmth of our homes provides a great breeding ground for fleas in carpets, pet bedding and just about any nook and cranny.

Cats can also carry the fleas and they do not even have to be your own cats, for example if a cat comes through your home or garden then the fleas can jump off or deposit eggs as they go. This is why we often advise treating the home environment and in-contact animals also.

So how can you tell if your pet has fleas?

Gently part your pets fur and search through close to the skin, fleas are a reddish/brown colour and quickly move away from the light. It can be easier to find fleas on the underside of your pet as the coat is naturally thinner here. It is often easier to see the flea dirt in your pet’s coat than the actual fleas.

So what is flea dirt and how can you tell if there is any on your pet?

Flea dirt is the waste product produced by fleas and when dry it looks like little black specs, however if you wet it these black specs turn red as they contain digested blood. This brings us to the ‘wet paper test’, we comb through your pets coat and collect the debris onto a piece of wet white paper, if there is flea dirt present there will be small red dots visible where the flea dirt has dissolved in the water. The wet paper test helps to distinguish between flea dirt and just dried mud that may be on your pet’s coat.

Can the fleas live on humans?

You will be relieved to hear that cat and dog fleas don’t tend to live on humans, fleas can however bite humans and cause an irritation at the site of such bites. Commonly humans find flea bites on their ankles, wrists or at their waist band as small itchy raised red areas on the skin.

How to treat the flea problem?

I would recommend using a veterinary flea product either in the form of a spot on (applied to skin at base of neck), impregnated collar or a spray directly on your dog. It is however really important to treat any in-contact animals not just dogs but cats too. Lastly do not forget to treat the environment; this is most easily done by use of an aerosol spray applied to the carpets, skirting boards and soft furnishing. Instructions often advise to vacuum carpets before you spray to help the chemicals to be more effective. Always read the safety information as the chemicals may be harmful to fish or birds and it is important to allow good ventilation after spraying also. In my experience it is best to treat half the house at a time so as to leave somewhere for pets and people to hang out without having to breathe in the spray. The chemicals in the spray are designed to kill or prevent further development of the fleas and their various life stages. The effect of the environmental sprays can last for a year.

Why is my pet still scratching even though I have treated him/her for fleas?

Provided a thorough approach to flea treatment using appropriate products has been undertaken then if your pet continues to scratch there are likely to be other factors contributing. These may include allergies or intolerances to food substances, cleaning products and or an underlying medical condition.

What medical conditions may be causing my pet to scratch?

The skin has its own inbuilt barrier to substances that can cause irritation this however can be weakened in conditions such as Hypothyroidism (under active thyroid gland), Cushing’s disease (over production of natural steroids) and bacterial skin infection.

What should I do if after treating my pet, in-contact animal and the environment my pet is still scratching?

It is likely you will need to discuss further investigations into your pet’s skin condition with your vet, to try and rule out some of the conditions listed above. The investigations may involve blood and or skin tests. There is also the possibility that an exclusion diet or low allergy diet may be suggested if diet is suspected as a contributing factor to the skin problem.

So in conclusion an itchy pet may well need more than flea treatment. That is not to say that fleas are not very high up on the list of things to rule out by taking a thorough approach to flea treatment. If you are in any doubt always talk to your vet as we are here to help you and your pet.

It is good to hear that you are treating Dexter for fleas; fleas are definitely high up on the list of causes for an itchy dog. Dry flaky skin may well be as a result of scratching due to flea infestation but can also be affected by allergies and medical conditions.
It is really important to remember that a pet suffering from a flea allergy or irritation does not need to be full of fleas. All it takes is one flea to bite your pet to set off the allergic reaction cascade that leads to the skin being irritated.
What is a flea?
Ctenocephalides canis or felis (the dog and cat flea) are a small wingless parasitic insect that live on our pets and in the environment.  Fleas can jump but they can’t fly, they need blood feeds to survive and a large proportion of the flea population are in the environment as oppose to on your pet.
Where are the fleas coming from?
Fleas live on animals as well as in the environment. The flea population consists of adult fleas, immature larval stages, dormant pupae and then eggs, as you move down the list the numbers increase significantly which is why we refer to them as a pyramid.
Fleas in the environment, by this we mean anywhere a pet with fleas has been, the warmth of our homes provides a great breeding ground for fleas in carpets, pet bedding and just about any nook and cranny.
Cats can also carry the fleas and they do not even have to be your own cats, for example if a cat comes through your home or garden then the fleas can jump off or deposit eggs as they go. This is why we often advise treating the home environment and in-contact animals also.
So how can you tell if your pet has fleas?
Gently part your pets fur and search through close to the skin, fleas are a reddish/brown colour and quickly move away from the light. It can be easier to find fleas on the underside of your pet as the coat is naturally thinner here. It is often easier to see the flea dirt in your pet’s coat than the actual fleas.
So what is flea dirt and how can you tell if there is any on your pet?
Flea dirt is the waste product produced by fleas and when dry it looks like little black specs, however if you wet it these black specs turn red as they contain digested blood. This brings us to the ‘wet paper test’, we comb through your pets coat and collect the debris onto a piece of wet white paper, if there is flea dirt present there will be small red dots visible where the flea dirt has dissolved in the water. The wet paper test helps to distinguish between flea dirt and just dried mud that may be on your pet’s coat.
Can the fleas live on humans?
You will be relieved to hear that cat and dog fleas don’t tend to live on humans, fleas can however bite humans and cause an irritation at the site of such bites. Commonly humans find flea bites on their ankles, wrists or at their waist band as small itchy raised red areas on the skin.
How to treat the flea problem?
I would recommend using a veterinary flea product either in the form of a spot on (applied to skin at base of neck), impregnated collar or a spray directly on your dog. It is however really important to treat any in-contact animals not just dogs but cats too. Lastly do not forget to treat the environment; this is most easily done by use of an aerosol spray applied to the carpets, skirting boards and soft furnishing. Instructions often advise to vacuum carpets before you spray to help the chemicals to be more effective. Always read the safety information as the chemicals may be harmful to fish or birds and it is important to allow good ventilation after spraying also. In my experience it is best to treat half the house at a time so as to leave somewhere for pets and people to hang out without having to breathe in the spray. The chemicals in the spray are designed to kill or prevent further development of the fleas and their various life stages. The effect of the environmental sprays can last for a year.
Why is my pet still scratching even though I have treated him/her for fleas?
Provided a thorough approach to flea treatment using appropriate products has been undertaken then if your pet continues to scratch there are likely to be other factors contributing. These may include allergies or intolerances to food substances, cleaning products and or an underlying medical condition.
What medical conditions may be causing my pet to scratch?
The skin has its own inbuilt barrier to substances that can cause irritation this however can be weakened in conditions such as Hypothyroidism (under active thyroid gland), Cushing’s disease (over production of natural steroids) and bacterial skin infection.
What should I do if after treating my pet, in-contact animal and the environment my pet is still scratching?
It is likely you will need to discuss further investigations into your pet’s skin condition with your vet, to try and rule out some of the conditions listed above. The investigations may involve blood and or skin tests. There is also the possibility that an exclusion diet or low allergy diet may be suggested if diet is suspected as a contributing factor to the skin problem.
So in conclusion an itchy pet may well need more than flea treatment. That is not to say that fleas are not very high up on the list of things to rule out by taking a thorough approach to flea treatment. If you are in any doubt always talk to your vet as we are here to help you and your pet.

Allergic Skin Disease in Dogs

Probably the second most common skin condition I see in dogs (after flea-related problems) is allergic skin disease, or atopy.

Dogs can develop an allergic reaction to any number of things in the environment, or, less commonly, to their food. Common indoor allergens include house dust mites, detergents and carpet cleaning products. Common outdoor allergens include grasses and pollens. Food allergens include beef, pork, dairy products and wheat. And of course fleas themselves can cause allergic skin disease in some unlucky dogs.

atopic paw

An allergic reaction is caused when the immune system makes antibodies to common substances instead of to those which are “foreign” to it. The antibodies cause mast cells in the skin to release chemicals like histamine, which cause irritation and inflammation.

The most common age for dogs to show the first signs of allergic skin disease is when they are young, usually 1-3 years old. Some breeds are more commonly affected than others, and the tendency seems to run in families. For this reason, and because it can be a very distressing condition, it is not advisable to breed from affected dogs.

The signs of allergic skin disease can occur all over the dog, but usually are most obvious on the feet, the ears and the tummy. The affected areas will be red and itchy, and usually this leads to the dog licking or chewing at the area which does further damage. Areas which are licked a lot will become reddish-brown in colour due to staining by saliva. After a long time the skin will become thickened and more pigmented, so may be black in colour especially on the tummy. Surface infection will often be present and have to be treated first before the cause can be found.

Diagnosing the problem is by a mixture of examination and tests. A full examination of the dog will be needed to see if the skin disease is part of a bigger problem, e.g. thyroid disease. Blood tests may be needed to rule out such problems. Then the skin will be examined in more detail. The appearance of the skin gives clues but is not usually enough on its own to find out the cause. In any itchy skin condition it is important to rule out fleas, mites and lice, by taking a skin scraping and a hair sample. This can also be used to look for fungal spores.

Once infection has been treated and parasites have been ruled out or treated, allergic skin disease may be a chief suspect. Finding out what causes an allergy is not very easy. There may well be more than one trigger, and allergy may develop to a substance which the animal has been exposed to before without any problems.

If food is suspected, a special diet based on very few food sources may be recommended, but any improvement may take some weeks to show so it is important not to give up too quickly and not to feed any additional tit-bits.

If a skin condition is very seasonal, always flaring up in the summer months, it makes it more likely that the cause might be grasses or pollens.

Finding out what substances cause an allergy can be done with skin tests or blood tests. Skin tests involve the injection of minute amounts of suspected allergens under the skin and is usually done under sedation. Blood test have to be sent to a laboratory specialising in these types of tests. All the most common causes of allergies can be checked to see if an individual reacts to them. This is most useful if the allergen is something which can be avoided or removed from the dog’s environment. If avoidance is not possible, or if many allergens are involved, then treatment will be needed for the whole of the dog’s life.

Antihistamines can help to reduce the distressing itch. Food supplements containing essential fatty acids can also be useful. Medicated shampoos also improve general skin health.

Some cases may need to be treated with steroids, which help control the inflammation and itch but do not tackle the cause. The disadvantage is the risk of serious side effects, so they must be used appropriately. Steroids can be very useful and very necessary in some cases but are not ideal for all or for long term use.

Another frequently used drug is cyclosporine which is an immunomodulator. It is unlikely to cause serious side effects and can give good long term control. Some dogs suffer from diarrhoea and vomiting at first but this often stops as treatment continues.

Desensitisation is a technique where a unique vaccine is created for an individual dog according to the allergens which were identified by blood testing. This vaccine is then injected monthly, starting with very small doses and building up to a regular monthly dose. This can also be very successful for some dogs but may take months to take effect.

Allergic skin disease is a very unpleasant condition, causing painful and distressing itchiness and often needing lifelong treatment. Diagnosis and treatment are not easy and will take time, which can be frustrating for both dog and owner. The best treatment will vary from one dog to another, so a lot of patience may be needed.

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