Chronic actinic dermatitis

Question 1

represents the end stage of progressive photosensitivity in some pxs.

Answer 1

Chronic actinic dermatitis.

Question 2

how is dx established?

Answer 2

History and phototesting.

phototesting positive in 1/3 of pxs.

Question 3

tx

Answer 3

Identify photosensitiErs by photopatch testing. 
sun avoidance 
suncreen
Topical tacrolimus 
top and sys steroid 
azathioprine 50-200mg/day  
low dose PUVA nbuvb
hydroxyurea 500mg twice a day 
cyclosporine 
thalidomide
myco mofetil