The processing time for all Schengen visas is around 15 days. Although, depending on the applicant's health, you may be able to acquire your visa sooner. You must give proof as quickly as possible that you require a Schengen Medical visa. Similarly, you can apply for a Schengen visa 3 months in advance and 2 weeks before you want to go. In exceptional circumstances, Schengen country embassies will process a medical treatment visa application even if it is submitted more than 2 weeks later.