Can addison's disease co exist with late onset cah?

2 distinct diseases: These are 2 very different conditions, both of which result in inadequate production of cortisol (as well as mineralocorticoids). Addison disease = failure of or destruction of the adrenal cortex. Cah = enzymatic deficiency which blocks the hormone production in the adrenals, generally presenting as a newborn. Similar results--potentially lethal cortisol deficiency--but very different diseases.