Human Allergic To Fleas

Nowadays people are exposed to many external and internal factors that can cause numerous allergic reactions. Among them there are a fleas, which is one of the most ordinary and frequent reasons for an allergic reaction. Many people suffer from hair-louse allergy, many don’t know what kind of reaction they have – itching, swollen itchy red spots on the skin etc., as they don’t suspect at all that they can be allergic to these little parasites. Flea allergy is like any other allergy – it’s quite ordinary, but it’s effects are not less serious.’

Human Allergic To Fleas

Ectoparasitic disease including scabies, pediculosis, demodicosis and others. are caused by arthropods which inhabit primarily on the surface of the host. One of the major hostiles insect pests are fleas that transmit a variety of viralbacterial and rickettsial diseases to humans and animals (). When fleas pierce the skin of the host with their highly specialized mouthparts, a phenomenon called Flea Allergy Dermatitis (F.A.D.) occurs originating from substances in flea saliva due to flea bite (). Scratching and itching are the most agonizing symptoms of flea bites in host. Flea bites cause itchy papules, which are often in groups of three, the so-called breakfast, lunch and dinner configuration (). Here, we point to reports attributed to human infestation by fleas in the different parts of the globe: In Switzerland, a couple was attacked by pigeon fleas (Ceratophyllus columbae) and the patients showed allergic urticarial reaction to bites (). In another similar report, a young woman was invaded repeatedly by cat flea from suburban raccoons (). In some cases, fleas had been found by staff in their uniforms and all family members had been bitten at home (). The most likely species to bite humans are C. felis felis or (Xenopsylla cheopis). Despite this fact, C. f. felis is an obligate ectoparasite whose main hosts are cats (). The presence of fleas in surrounding areas threats human life and increases the probability of disease transmitted by them (). Therefore, the current report describes human infestation by ectoparasites causing cutaneous severe reactions and dermatitis.

Case presentation

A family of three members, a man with his spouse and a son who live in Gorgan City, Golestan province, Iran referred to the dermatology clinic in Babol complaining of multiple bites accompanied by severe itching in the different parts of their body especially, the legs. Some samples of tiny live insects were collected from their clothing and the infected clothes were taken for examination.

They complained of irritation and intense itching. The sites of scratching were tender and painful, particularly at night. Examination of the affected skin demonstrated many papules with solar erythema measuring 2-10 mm in diameter, the affected areas were vivid in red color by which they were surrounded with bright pink areola about 2 mm wide. Furthermore, in the center of some of the bites, a red hemorrhagic punctum was observed. Most lesions were in groups of three (figure 1).

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Multiple lesions and solar erythema due to flea bites in the leg of a 32 year old man

Further investigation revealed that their neighbors enjoy keeping pets and domestic animals and also recently they have been on close contact with them. After careful examination and scrutiny of the collected minute samples, the samples were sent to the Department of Parasitology of the lslamic Azad University where the diagnosis of c.felis was made (cat flea). Treatment began by applying hydrocortisone cream as an antipruritic twice a day and all the patients’ symptoms fade after 12 hours and disappeared after four days. The elimination of fleas from the house yard, furniture and all suspected locations was accomplished by spraying and fumigating with simetrin.


In this case report, we present a case of dermatitis caused by cat flea. Cat flea saliva, feces and debris are considered as allergens (). Usually in late summer (August and September) flea populations reach their peak and their potential ability to attack to host increases when the temperature and humidity increases which is compatible to our ealier report (). Concerning the delayed reaction in both males and females, younger age groups were noticeably more sensitive compared to older age groups to the bites of fleas in one study (). Similar to our case, other researchers also reported dermatitis due to bites flea ().

Based on the characteristic patterns of flea bites, they normally prefer the ankles and bare feet while in the current report, most of bites were limited to the patient’s foot (). The skin reaction to insect bites and stings usually last only up to few days. Nonetheless, in some cases, the local reaction of skin can last up to two years. These bites sometimes cause misdiagnosis in other forms, as either benign or cancerous lesions (). Not only flea bites may result in severe allergic reactions in susceptible individuals but also scratching the bites can lead to secondary infection. It is possible that the prevalence of human infestation due to arthopods in North of Iran is high and the patients were misdiagnosed as nonspecific dermatitis. Hence, more studies on ectoparasites and human infestation in the north of our country due to its appropriate climate and geographical conditions are highly recommended.

In conclusion, this case presentation in our region highlights the importance of ectoparasites causing dermatitis.

Human Allergic To Fleas

If you’re allergic to fleas, you may be wondering if there’s anything you can do to get rid of them. After all, they can cause all kinds of trouble for people who are allergic. But don’t worry—we’ve got a solution!

We recently discovered that humans are actually allergic to fleas. Yes, it’s true: most people with allergies to fleas have an allergy to the saliva of fleas, not the flea itself. The problem is that this saliva can live in your house for up to three years after the last time a flea was present, so it’s important that you find a way to get rid of it before it causes any problems for you or your family members.

List Of Human Allergic To Fleas

Anti-Allergen Pet Shampoo - Best Dog & Cat Dander Allergy Remover for Reducing Fleas, Ticks, & Allergies, Gentle Hypoallergenic Formula for Dry Sensitive Skin & Allergy Relief by The Ecology Works
Price : $12.99
Features :

  • Breathe Easy Once Again – Neutralize allergy causing contaminants like pet dander, fleas, dust mites, and ticks with a single powerful shampoo.
  • All-in-One Solution – Anti-allergen shampoo deeply cleanses the fur and skin from irritating contaminants while simultaneously working as a gentle conditioner for a softer, shinier coat.
  • Developed for Sensitive Skin – Hypoallergenic formula is anti-itch, contains no harsh chemicals or toxins, and is gentle on dogs, cats, and small animals.
  • Say Goodbye to Allergy Symptoms – Pet Dander is one of the most common causes of symptoms like sneezing, coughing, and watery eyes. Our Dog & Cat Allergy Shampoo helps remove these contaminants from the coat and reduce symptom triggers in your home.
  • Advanced Odor Protection Technology – With a proprietary sustained release system for lasting odor protection, our pet shampoo will keep your pet smelling fresh for longer.

Additional Info :

Price : $9.97
Features :

  • GENTLE PROTECTION: Vet’s Best Flea & Tick Home Spray uses certified natural ingredients to kill fleas, flea eggs, and ticks on contact.
  • PROVEN EFFECTIVE: Whether facing an active infestation or are applying for routine prevention, our spray is scientifically proven effective against pests but gentle enough to use around the whole family.
  • CERTIFIED NATURAL OILS: Each steam-distilled essential oil is selected for its potent pest-fighting properties and is 100% Certified Natural.
  • TOTAL HOME DEFENSE: Applies easily on surfaces, indoors and out, including dog bedding, crates, furniture, blankets, upholstery, carpets, outdoor surfaces, and more. Also gentle enough to be applied directly on dogs and puppies 12 weeks or older.
  • MADE IN THE USA: Our products are proudly manufactured in the USA with quality domestic and internationally sourced ingredients.

Additional Info :

Color Green
Item Dimensions
Height 0.81 Inches
Width 3.38 Inches
Length 3.38 Inches
Weight 2 Pounds
FRONTLINE Plus for Cats and Kittens (1.5 pounds and over) Flea and Tick Treatment, 3 Doses
Price : $38.99
Features :

  • Waterproof flea and tick treatment for cats and kittens: Frontline Plus for Cats provides waterproof, fast-acting, long-lasting flea and tick treatment and control for your cat. This product is approved for use on cats and kittens 1.5 lbs and over.
  • Break the flea life cycle with frontline: Frontline flea and tick treatment for cats kills adult fleas plus flea eggs and larvae to stop existing infestations and prevent establishment of new infestations.
  • Kills fleas and ticks: Frontline flea and tick treatment for cats kills fleas, flea eggs, lice, and ticks. This flea and tick treatment kills ticks, including those that may transmit Lyme disease.
  • Trusted flea and tick protection for cats: Frontline Plus for Cats has been trusted by veterinarians for nearly 20 years. Made with 2 tough killing ingredients, fipronil and (S)-methoprene – one to kill adult fleas and ticks and the second to kill flea eggs and larvae – this fast-acting, long-lasting protection provides flea and tick control for cats and kittens 8 weeks and older.
  • Lasting flea and tick protection: Frontline’s long-lasting formula is stored in the oil glands of the cat’s skin to give non-stop flea and tick protection for a full 30 days. Frontline flea and tick treatment for cats works non-stop for a full 30 days. A 3-dose supply lasts for 3 months.

Additional Info :

Color Green
Item Dimensions
Height 0.5 Inches
Width 4.5 Inches
Length 6 Inches
Weight 0.07054792384 Pounds
The Enemy of my Enemy
Price :
Features :

    Additional Info :

    Release Date 2022-03-08T21:00:00.000Z
    Itch: The Explosive Adventures of an Element Hunter
    Price : $2.99
    Features :

      Additional Info :

      Release Date 2013-04-02T00:00:00.000Z

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