Disease Guide

Paraproteinemia in Dogs & Cats: Symptoms, Diagnosis & Care Guide [2025]

Paraproteinemia is an abnormal proliferation of proteins in the blood, commonly associated with multiple myeloma, and can lead to increased blood viscosity and bleeding.

Last updated: 2026/01/06
Pethealthmap Editorial Team
Sources: WSAVA, ACVIM

When to See a Vet

Seek immediate emergency care

  • Continuous or recurrent generalized seizures
  • Sudden complete loss of vision or severe behavioral disorientation
  • Altered consciousness that is difficult to arouse or persistent excessive lethargy

Schedule a clinic visit soon (within 24–72 hours)

  • Noticeably reduced alertness and decreased activity level
  • Significant changes in appetite or gradual weight loss
  • Frequent drinking or markedly increased urine output

01What symptoms indicate something is wrong?

Paraproteinemia in dogs and cats often presents as non-specific systemic or neurological symptoms. Monitor changes in condition and watch for signs affecting multiple organ systems.

  • Lethargy, noticeably reduced activity level, and less interaction with family
  • Changes in appetite or gradual weight loss with reduced food intake
  • Increased thirst or changes in urine output, possibly accompanied by kidney dysfunction
  • Intermittent seizures or sudden behavioural changes such as disorientation
  • Blurred vision or sudden loss of vision, affecting walking and the ability to find objects
  • If symptoms persist or worsen, schedule a veterinary assessment as soon as possible

Seek emergency care immediately if you notice the following symptoms:

  • ⚠️ Persistent or recurring generalised seizures
  • ⚠️ Sudden complete loss of vision or severe behavioural confusion
  • ⚠️ Unresponsiveness, difficulty arousing, or prolonged excessive sleepiness

02How to assess the situation at home? Key observations and emergency indicators

Keeping records at home can help your vet quickly understand the condition — document timing and frequency as accurately as possible.

  • Record the onset date and progression of any decline in alertness or activity level
  • Measure and log your pet's daily water intake and the frequency and estimated volume of urination
  • Use your phone to film any seizures, abnormal behaviour, or signs of vision impairment
  • Note the timing and severity of changes in appetite, vomiting, diarrhoea, or weight
  • If vision loss is suspected, film your pet walking or searching for objects to bring to the appointment

03How does the vet diagnose this? Common diagnostic tests

Initial assessment typically includes blood, urine, and imaging tests, with specialist or advanced diagnostics arranged based on the results.

Urinalysis

evaluates urinary protein levels, concentrating ability, and infection markers

Blood and biochemistry panel

checks albumin, liver and kidney function, and electrolyte abnormalities

X-rays

rules out thoracic, abdominal, or skeletal and neurological structural issues

Ultrasound

assesses structural changes in the kidneys, liver, or gastrointestinal tract

Biopsy or tissue sampling

performed when pathological confirmation of the cause is needed

PCR or serology testing

ordered if an infectious or immune-mediated cause is suspected

04How to treat and care for your pet after diagnosis? Medications, diet adjustments, and home care

Treatment depends on the underlying cause and typically involves supportive care alongside targeted therapy, with regular monitoring of blood and urine markers and clinical response.

  • A medication and supportive care plan will be developed based on test results, with expected outcomes explained
  • If kidney or intestinal issues are identified, a specialised therapeutic diet may be recommended
  • Home care includes adequate rest, fluid management, and ongoing symptom monitoring
  • Schedule regular follow-up appointments to track blood and urine changes and evaluate treatment response
  • For complex or recurring cases, referral to a specialist or advanced diagnostics is recommended

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

1
Record the onset, frequency, and progression of symptoms
2
Log your pet's daily water intake, urination frequency, and estimated urine volume
3
Prepare video or photo evidence of seizures or abnormal behaviour for the vet to review
4
Bring a list of current medications, supplements, and past medical history
5
Call ahead to book an appointment and describe the symptoms so an appropriate examination slot can be arranged

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.

Frequently Asked Questions (FAQ)