- 2,658 viewsDuration: 3:46A Grade 10 learner in Nakuru County has had her education interrupted by a rare illness known as Congenital primary lymphedema that causes her right leg to swell. For six months, Debra Njiiri, a learner at Moi Forces Academy Lanet, has remained at home while her classmates continue with lessons. Her family has walked with her through a decade of unanswered questions and repeated hospital visits.