For case 1
My diagnosis is diabetic foot ulcer (DFU)

Treatment involves controlling blood sugar with insulin, wound debridement, antibiotics, proper education on diabetes and foot care.

For case 2
My diagnosis is Acute gastroenteritis( food poison) with severe dehydration.
Treatment include rehydation with fluids (IVF initially), probiotics, zinc, +/- antibiotics, and proper counseling of the parent(s) on food/water safety and personal hygiene.