The most probable diagnosis for irregular bone loss and eosinophils is Hand-Schuller-Christian disease.

Vitamin D resistant rickets is characterized by absence of lamina dura and hypocalcified dentine.

Explanation: Prodromal symptoms are early signs that precede the full onset of a disease. In the case of viral fevers, patients often experience nonspecific symptoms such as malaise, fatigue, and low-grade fever 1 to 2 days before the more specific symptoms of the viral infection appear.

X-rays can be focused is a false statement; they cannot be focused in the same way as light.

Hypersensitivity reactions seen in stomatitis venenata are classified as Type IV.