Hi I used google to translate to English so all could see your response.
Translation:
I have been taking lenalidomide for 20 months now—10 mg, then 5 mg, and finally 2.5 mg. The problem for me is cutaneous: a large patch of bumps, especially on one leg and less so on the arms, which does not respond to corticosteroids.

Je prends le lenalidomide depuis 20 mois maintenant 10,puis 5 et enfin 2,5 le problème pour moi est cutané grosse plaque de boutons surtout sur une jambe et moins sur les bras qui ne répondent pas aux corticoides

Hi I took 3-10 mg pills and day three I couldn’t form a sentence.
I stopped taking it and reported to my doctor.
Had a CT scan and thank God didn’t have a stroke.
It’s impressive how many people have no side effects.

I was on Lenalidomide and couldn’t tolerate it. Three attempts all brought me out in a full body rash. I was like a lobster and so very uncomfortable and itchy. Now on injections.

My first two doses I had a rash took allergy meds to help. Other than that I don't believe any side effects but I do like the seven days off! Please let your Dr/team know so they can help you. I keep a simple daily journal on my phone for meds/side effects and questions for my next visit.