Gilchrist's disease, more commonly known as Blastomycosis ("blasto"), is a serious, often fatal systemic fungal infection caused by the organism Blastomyces dermatitidis. While it can affect humans, dogs are 10 times more susceptible to the disease than humans, making them common "sentinels" for the disease in endemic areas.

What are the symptoms of Gilchrist's disease?

Symptoms include fever, cough, shortness of breath, weight loss, body aches, chest pain, fatigue and night sweats. If the infection spreads beyond the lungs you may also develop a rash, blisters or ulcers on your skin. In severe cases, blastomycosis may also spread to the bones, joints, brain and spinal cord.

What is the prognosis for Gilchrist disease?

The survival rate for blastomycosis in most people is over 90%. Chronic lung conditions and diseases that compromise your immune system can put you at a higher risk for life-threatening illness.

Is Gilchrist disease contagious?

This yeast may stay in your lungs and cause fungal pneumonia or spread through your bloodstream to other parts of your body. Blastomycosis is not contagious, meaning it is not spread from one person to the next. It used to be called Gilchrist disease or Chicago disease.

What are the first signs of blastomycosis in dogs?

Clinical Signs of Blastomycosis in Animals

• weight loss.
• cough.
• anorexia.
• lymphadenopathy.
• dyspnea.
• ocular disease.
• lameness.
• skin lesions.

Northern Michigan dog fighting for its life against rare fungal infection

Can blastomycosis be transmitted from dog to human?

Pets, particularly dogs, can get blastomycosis. Although it is extremely rare, it is possible for people to get infected by animals. Blastomycosis can spread from animals to people through bites. Veterinarians can also become infected from injuries caused by needlesticks contaminated from use on an infected animal.

What does blastomycosis look like on skin?

Common sites of cutaneous lesions of blastomycosis are face, neck, scalp, and upper limbs. These may look elevated, crusted, warty, plaque-like, or ulcer-like and can vary in size from a few millimetres to several centimetres. Early lesions can also appear as papules or pustules.

Why is it called Gilchrist disease?

Blastomycosis has been around for millions of years, but was first described by Thomas Caspar Gilchrist in 1894. For this reason, it is sometimes called "Gilchrist's disease".

Is blastomycosis a mold?

Blastomycosis is a fungal infection typically acquired by breathing in spores of the fungi Blastomyces dermatitidis or Blastomyces gilchristii. These fungi can be found in moist soils, particularly in wooded areas and along waterways.

What is blastomycosis in the yard?

People can get blastomycosis by breathing in Blastomyces, a fungus. The fungus lives in the environment in moist soil and decomposing plant matter like wood and leaves. About half of people who breathe in Blastomyces do not get blastomycosis.

What is the survival rate for dogs with blastomycosis?

“The survival rate for dogs with severe respiratory disease due to blastomycosis is only about 50%,” says Dr. Reinhart, “which is unacceptable. We need to figure out what we can do to support them initially, so they can get through the worst of the clinical signs.”

What fungus causes blastomycosis?

Blastomycosis is a fungal infection caused by Blastomyces dermatitidis. It presents as a pulmonary infection after the inhalation of spores, and it may be either asymptomatic or have severe life-threatening complications like acute respiratory distress syndrome.

Can a fungal lung infection be cured?

Treating fungal lung infections

For an aspergilloma, long term antifungal therapy has been shown to be successful in up to 60% of patients. However, surgery may be needed to remove the section of the lung affected, if this is a suitable option for you.

What are the first signs of sporotrichosis?

The beginning signs of sporotrichosis typically start with a small, painless bump (pink, red, or purple) at the point where the fungus entered the skin, often on a hand or arm from handling plants. This initial bump can develop into a sore or ulcer, and more bumps or nodules may appear, spreading along the lymphatic channels (lymph nodes) in a line, sometimes draining pus.

How to tell if a rash is fungal or bacterial?

A bacterial skin infection usually develops when bacteria enter through a cut or wound, leading to swelling, pus, or painful rashes. In contrast, a fungal skin infection thrives in warm, moist areas like skin folds, often appearing as circular, scaly, and itchy patches.

How did my dog get blastomycosis?

Hunting and sporting dogs (e.g. hound and retriever breeds) are at higher risk of blastomycosis, likely due to their greater exposure to the mold through roaming, sniffing, and digging in the soil. In North America, most cases of canine blastomycosis are diagnosed in late summer and early fall.

How much does it cost to treat blastomycosis in dogs?

Veterinary Cost

Blastomycosis is an expensive disease to diagnose and treat. Lab work, x-rays, and biopsy can cost anywhere between $500-$1500. Long-term antifungal medication can also be expensive. The monthly cost, depending on the dog's size and dose, may be between $150-$750.

How long does itraconazole take to work on fungal infection in dogs?

The liquid form of itraconazole can be given with or without food. Itraconazole capsules should be given with a high-fat meal. It can take a few weeks for itraconazole to reach its full effects. But you should see some improvement after giving your dog the medication for a few days.

What kills blastomycosis?

The antifungal itraconazole is usually used to treat mild to moderate blastomycosis. Amphotericin B is usually recommended for severe blastomycosis. Healthcare providers may test patients' blood to check if there is enough antifungal medication in their body.

What does blastomycosis on the skin look like?

Papules, pustules, or nodules are most frequently found on exposed body areas. They may look like warts or ulcers. They are usually painless. They may vary from gray to violet in color.

Can you test your soil for blastomycosis?

Soil testing is very difficult and is generally unreliable as a predictor of Blastomycosis even in areas of known occurrence.

How do vets test for blastomycosis?

A urine and blood test for blastomycosis is available for dogs, but data is very limited in cats, so diagnosis in cats is generally made through visualization of fungal organisms in infected tissues under the microscope.

Are there different types of Gilchrist disease?

Blastomycosis — also known as Gilchrist's disease — is a pulmonary disease usually caused by the dimorphic fungus Blastomyces dermatitidis. Some cases of blastomycosis have been attributed to other Blastomyces species, B gilchristii and B helicus.

Can blastomycosis affect the brain?

DISCUSSION: CNS manifestations of blastomycosis most commonly include meningitis, brain abscess, and epidural abscess. The diagnostic approach requires direct visualization of Blastomyces organism or identification by culture.

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