No, you don't call these immunodeficiency. It's not primarily a
deficiency of the cells of the immune system. You'd have to call a
scratch on your skin or a peptic ulcer an immune defect then, which
would not be appropriate.

<snip>

Generally speaking, defects in barrier structures (i.e. skin) are not
considered to be immunological, as these structures are not considered
to be immune organs.  The reason for this is simple - the primary
function of most of these structures is not immunity; rather, their
immune function is simply a product of their primary function.  For
example, the skin protects the underlying tissues from mechanical
damage, UV radiation, dehydration, chemical exposure, etc.  It's ability
to minimize pathogen entry is simply a product of the underlying
structure that allows the skin to do all of these same things.

The same things can be said of the other tissues which act via barrier
function - the lungs (main role = O2/CO2 exchange), the digestive tract
(main role = nutrient absorption), etc.

Also, because of the important functions these tissues have, the number
of genetic defects in them are very small.  Even small changes in lung
morphology, or skin structure, etc, can profoundly - and usually fatally
- effect the patient.  In the diseases where we do see defects in the
function of these barriers, defects in immunity are often only a "side
effect" compared to the main problems which arise.

Bryan