The breed is prone to certain health problems, including:stones and bladder infections;allergy;Bichons are also known to be sensitive to fleas;knee dislocation;dislocation of the patella;vaccine sensitivity – Symptoms usually include hives, facial swelling, soreness, and lethargy. In rare cases, a vaccine-susceptible dog can develop complications, including death;dysplasia of the hip joint;As the dog ages, arthritis (associated with hip dysplasia) may develop;juvenile cataract.