In this report Authors describe a case of general cutaneous reactions
(urticaria-like eruptions) in one patient who underwent radiotherapy.
Cutaneous reactions appeared a few hours after radiotherapy, with a di
rect dependence from daily dose. This case, with an interesting etiopa
thogenetic profile, shows the possible cutaneous reactions strictly re
lated to single fraction dose. For a correct planning and personalizat
ion of radiotherapy, an accurate anamnesis of patient in relation to p
revious allergic events proves therefore necessary.