Symptoms can vary greatly for persons affected by OsteoPETrosis. These can include (but are not limited to): fracturing easily, cranial nerve compression (leading to blindness, deafness and facial nerve paralysis), grave pancytopenia, anemia, lack of mobility, high levels of pain, osteomyelitis and lack of energy. In the infantile form - the children may suffer from failure to thrive and hypercalcaemia