Lymphoedema in Dogs & Cats: Symptoms, Diagnosis & Care Guide [2025]
Lymphoedema is limb swelling caused by impaired lymphatic circulation, which can be congenital or acquired. Management focuses on compression therapy and physiotherapy.
When to See a Vet
Immediate veterinary care needed (emergency)
- •Swelling rapidly enlarges over a short period and is accompanied by skin rupture
- •High fever, lethargy, or obvious refusal to eat occurs
- •Difficulty breathing or sudden inability to move with marked weakness
Schedule a clinic visit as soon as possible (within 24-72 hours)
- •One or both limbs are gradually swelling but the pet can still bear weight
- •The pet flinches or shows discomfort when the affected area is touched
- •Activity level is reduced but the pet can still move short distances
01What symptoms indicate something is wrong?
Lymphoedema typically presents as localised soft-tissue swelling that may affect mobility and skin integrity.
- Visible swelling in one or both limbs
- Pitting or changes in skin tension when the affected area is pressed
- Lameness or reluctance to use the affected limb due to swelling
- The swollen area may be tender or responsive to touch
- Prolonged lymph fluid accumulation can lead to skin thickening or ulceration
Seek emergency care immediately if you notice the following symptoms:
- ⚠️ Swelling expands rapidly within a short period and the skin begins to break down
- ⚠️ High fever, lethargy, or marked loss of appetite
- ⚠️ Difficulty breathing, sudden inability to move, or obvious weakness
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02How can I assess the situation at home? Key observations and when to seek emergency care
Recording observations and changes at home helps the vet assess the progression and likely underlying cause.
- Note the date and time swelling first appeared and how it has progressed
- Take photos from the front and side, and record a video of your pet walking
- Observe for lameness or reluctance to bear weight on the affected limb
- Track appetite, water intake, and urination and defecation
- Weigh your pet regularly or estimate weight changes for comparison
03How will the vet make a diagnosis? Common diagnostic tests
Your vet will use a combination of physical examination, imaging, and sample analysis to identify the underlying cause.
Physical examination
palpation of lymph nodes and assessment of skin condition
X-rays
to rule out skeletal or thoracic and abdominal involvement
Ultrasound
to evaluate soft tissue and lymph node changes
Advanced imaging (CT)
for complex or deep lesion assessment
Tissue biopsy or fine-needle aspirate and bacterial culture to rule out infection or neoplasia
04How is it treated and managed after diagnosis? Medication, diet, and care guide
Treatment may include medication, assisted drainage, and long-term nursing care and monitoring.
- Medications to control inflammation or secondary infection
- Physical support measures such as compression bandaging or lymphatic drainage therapy
- Diet and weight management to reduce pressure on the affected area
- Home care to avoid prolonged compression or moisture-related infection
- Regular follow-up visits to monitor imaging results, wound healing, and functional improvement
05What should I prepare before the vet visit? Key information to help the vet assess your pet quickly
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.