Nutritional secondary hyperparathyroidism in a seven-month old male kitten showing signs of paraparesis (ataxia, dragging the pelvic limbs), abdominal distention, aconuresis was diagnosed with clinical signs, radiographs and serum biochemical tests. In radiographs, bones were abnormally radiolucent and cortices were thin. Serum biochemical tests were performed, but had normal values. The treatment was directed at the suspected dietary calcium and phosphorus imbalance. Oral calcium supplement and a commercial cat food were introduced. On clinical evaluation 3 months later, this case showed no clinical signs.