[The dermocorticoids, irreplaceable and feared].

Dermocorticoids represent a significant part of the therapeutic arsenal in dermatology due to their anti-inflammatory and anti-proliferative effects, with an indication in numerous inflammatory dermatoses. Their cutaneous side effects are feared but are also often over-estimated. On the other hand, the systemic adverse effects are less well studied. We present here the properties of this medicament class and especially the rules to respect to avoid adverse reactions.