Hi Sandrine

I can't say anything sensible about your possible MG and acquired angioedema II but, as somebody (day job) who knows quite a lot about immunology, but not as a clinical health professional, here are some thoughts about your cryoglobulinemia:

Broadly speaking it comes in three forms.

Type I is often associated with neoplasia like multiple myeloma or Waldenström macroglobulinemia - getting your GP to refer you to an oncologist could help here.

Type II is associated with Hepatitis C virus infection - seeing a liver specialist might be of benefit.

Type III is linked to autoimmune diseases like systemic lupus erythematosus and rheumatoid arthritis. A specialist clinical immunologist should be able to investigate these possibilities.