Background:
Employing the secondary action or adaptative reaction of the organism as therapeutic
response, homeopathy uses the treatment by similitude (similia similibus curentur) administering to sick individuals the medicines that caused similar symptoms in
healthy individuals. Such homeostatic or paradoxical reaction of the organism is scientifically
explained through the rebound effect of drugs, which cause worsening of symptoms after
withdrawal of several palliative treatments. Despite promoting an improvement in psoriasis
at the beginning of the treatment, modern biological therapies provoke worsening of
the psoriasis (rebound psoriasis) after discontinuation of drugs.
Method:
Exploratory qualitative review of the literature on the occurrence of the rebound
effect with the use of immunomodulatory drugs [T-cell modulating agents and tumor
necrosis factor (TNF) inhibitors drugs] in the treatment of psoriasis.
Results:
Several researches indicate the rebound effect as the mechanism of worsening of psoriasis
with the use of efalizumab causing the suspension of its marketing authorization in
2009, in view of some severe cases. Other studies also have demonstrated the occurrence
of rebound psoriasis with the use of alefacept, etanercept and infliximab.
Conclusion:
As well as studied in other classes of drugs, the rebound effect of biologic agents
supports the principle of similitude (primary action of the drugs followed by secondary
action and opposite of the organism).
Keywords
Homeopathy - Law of similars - Action mode of homeopathic remedies - Rebound effect
- Paradoxical reaction - Biological therapy - Monoclonal antibodies - TNF antagonists
- Psoriasis