Claudette Maillé had to re-shoot the scene with the then-13-year-old Diego Luna multiple times. Initially, they were supposed to appear both naked, with Maille only meant to graze his genitals a couple of times. However, as he kept ejaculating on her due to this, that plan was canceled. The next plan for the scene was to depict breastfeeding, which they did record, but it was deemed too sexual in nature. Eventually, the final version of the scene in the movie was a sensual caressing.
Based upon an Eusebio Ruvalcaba's novel.
The film remained canned for five years for various reasons: from the fact that the director of Imcine at the time (Jorge Alberto Lozoya) didn't like it to the fact that successive administrations didn't have the money to finish it.
With only two screenings in Guadalajara and Cancún in 1995 and 1996, 'Un hilito de sangre' showed then that, especially among young people, it had a very good impact, due to its baroque production and the imaginative games played by the protagonist, the then thirteen-year-old Diego Luna.