Neonatal rickets is caused by a calcium deficiency, often associated with a lack of vitamin D. Treatment involves oral vitamin D supplements or fish liver oil. The preventive dose is 400 IU per day, while the treatment dose is 800 IU per day, but caution should be exercised to avoid toxicity. Parents should take their child to the hospital for professional treatment immediately if they notice symptoms of rickets, and they should also ensure a balanced diet to aid in the child’s recovery.