What are the common symptoms of a lower urinary tract fungal infection?

Common signs include blood in the urine, frequent urination in small amounts, discomfort or persistent licking of the genital area, and a drop in appetite or energy. If you notice any of these, consult your vet.

How does a vet confirm a fungal infection?

Diagnosis is primarily based on urinalysis and urine culture. Blood tests and imaging such as ultrasound or X-ray may also be used to assess organ involvement. Follow your vet's guidance for next steps.

How long does treatment take before improvement is seen?

Depending on the severity of the infection and culture results, symptom improvement may take several weeks to months. Regular follow-up visits and repeat urine cultures are needed to confirm treatment response.

What information should I bring to the vet visit?

It helps to record the onset date, urine colour and frequency, and any changes in water intake. Bring videos of your pet urinating and any previous test reports so the vet can assess the situation quickly.

How much do the tests and treatment usually cost?

Costs vary by clinic and region — ask your vet for an estimate before proceeding.

Disease Guide

Lower Urinary Tract Fungal Infection in Dogs & Cats: Symptoms, Diagnosis & Care [2025]

Fungal infections of the lower urinary tract are less common than bacterial ones, but present with similar symptoms and require antifungal treatment over a longer course.

Take 1 minute to check the symptoms first

Last updated: 2026/01/05

Pethealthmap Editorial Team

Sources: WSAVA, ISFM, National Taiwan University Veterinary Hospital

When to See a Vet

Seek Emergency Care Immediately

•Complete inability to urinate or straining repeatedly with no urine produced
•Sudden large amount of bright red blood in urine with lethargy or weakness
•Persistent high fever accompanied by extreme lethargy or altered consciousness

Schedule a Clinic Visit Soon (within 24–72 hours)

•Frequent attempts to urinate with only very small amounts passed each time
•Cloudy urine or urine with a small amount of blood
•Repeatedly licking the genital area and appearing uncomfortable

01What symptoms indicate something is wrong?

Lower urinary tract fungal infections in dogs and cats most commonly show up as abnormal urination and general malaise. Monitor your pet's behaviour and urine colour for early warning signs.

Pink or bright red urine (haematuria)
Frequent squatting to urinate but passing only small amounts each time
Discomfort when urinating or persistent licking of the genital area
Noticeable drop in energy, appetite, or activity level
Significant changes in water intake or body weight over a short period

Seek emergency care immediately if you notice the following symptoms:

⚠️ Complete inability to urinate (suspected urinary retention)
⚠️ Heavy bright-red bleeding in the urine accompanied by weakness or lethargy
⚠️ Persistent high fever combined with extreme drowsiness or altered consciousness

02How can I assess the situation at home? Key observations and criteria for seeking emergency care

Keeping a systematic record at home before the vet visit helps the veterinarian quickly understand the disease course and its progression.

Note the date symptoms began and track how they change over time
Record your pet's urination behaviour and frequency on video with your phone
Log daily water intake and the number and volume of urinations each day
Observe any changes in appetite, energy, and activity level
Weigh your pet regularly or estimate weight to catch short-term changes
Photograph any blood-tinged or abnormally coloured urine as a reference for the vet

03How will the vet make a diagnosis? Common diagnostic tests

Tests performed at the clinic help confirm the source of infection, the causative organism, and any potential complications, and typically involve sample submission and imaging studies.

Urinalysis (including microscopy and urine sediment evaluation)

Urine culture and sensitivity testing to identify the pathogen

Complete blood count to assess infection response or anaemia

Biochemistry panel to evaluate kidney and liver function

Abdominal ultrasound to check the bladder and kidneys for abnormalities

X-ray or advanced imaging (CT/MRI) if needed for further evaluation

04How to treat and care for your pet after diagnosis? Medication, dietary adjustments, and home care guide

Treatment is tailored to culture and examination results. Regular follow-up visits are essential to monitor progress, and careful home management helps reduce the risk of recurrence.

The vet will devise a treatment plan based on culture results and examination findings
Attend all scheduled follow-up visits and repeat urine cultures to confirm treatment response
Adjust diet and daily habits as advised to reduce bladder irritation
Keep the home environment clean and encourage adequate water intake
If symptoms do not improve or keep recurring, consider a referral to a specialist hospital

05What should I prepare before the vet visit? Key information to help the vet identify the cause quickly

Bring recorded videos of your pet's urination for the vet to review

Report urine colour, frequency, and any changes in water intake

Write a detailed timeline of when symptoms started and how they have progressed

List all current medications and supplements your pet is taking

Bring any previous test reports or imaging results for reference

Consider calling ahead to book an appointment at a clinic that offers urine culture

This content is for reference only and cannot replace a professional veterinary diagnosis. If your pet shows signs of illness, please seek veterinary care promptly.