Feline leishmaniosis
Also known as Leishmania infantum.
The same disease that is such a concern in dogs also affects cats in Spain, though less often. It is spread by sand flies and mainly causes skin and eye lesions.
- System
- Parasites
- Is it urgent?
- Not usually
- Spreads to other cats
- No
- Spreads to people
- No
- Typical cost in Spain
- Diagnosis, €80–200; treatment, €30–80 a month.
It does not pass directly from cats to people: it is transmitted by the sand fly.
Symptoms
- Nodules or ulcers on the face, ears and eyelids
- Inflamed eyes
- Stomatitis
- Enlarged lymph nodes
- Weight loss
Causes
The parasite Leishmania infantum, transmitted by sand fly bites in the Mediterranean region and central Spain. It is more common in cats with FIV.
How it is diagnosed
Serology, PCR and cytology or biopsy of the lesions.
Treatment
Antiparasitic drugs used off-label in cats, always with veterinary follow-up.
No doses, on purpose: any medicine must be prescribed by your vet for your cat.
Prognosis
Guarded to good depending on how widespread it is and whether there are other diseases.
Prevention
Insect screens, and not letting the cat out at dusk in summer. Note: deltamethrin collars for dogs are toxic to cats.
Frequently asked questions
Is feline leishmaniosis contagious?
No. It does not pass directly from cats to people: it is transmitted by the sand fly.
Can feline leishmaniosis be cured?
Guarded to good depending on how widespread it is and whether there are other diseases. Antiparasitic drugs used off-label in cats, always with veterinary follow-up.
How much does it cost to treat feline leishmaniosis?
As a guide for Spain in 2026: Diagnosis, €80–200; treatment, €30–80 a month. Prices vary a lot between clinics and cities, and out-of-hours emergencies cost more.
How can feline leishmaniosis be prevented?
Insect screens, and not letting the cat out at dusk in summer. Note: deltamethrin collars for dogs are toxic to cats.
More in parasites
Educational content from Michipedia. It does not replace diagnosis or treatment by a vet: if you have any doubt about your cat's health, ask. Costs are a guide for Spain in 2026.