Define Conditions associated with increased need for Vitamin A?

Conditions and populations associated with increased need for vitamin A includes young children  particularly  the pre schoolers, pregnant and lactating mother as already highlighted earlier, as well as, clinical conditions such as malabsorptive  disorders (steatorrhoea), pancreatic, liver or gallbladder- diseases. Patients with chronic nephritis, acute protein deficiency, intestinal parasites, or acute infections may also become vitamin A deficient.