Hello .. Thanks for writing us..
First keep in mind that high blood pressure
may not be due to treatment of NHL, it might be essential Hypertension
only that is usually seen in middle age group..
Fluctuation of B.p might be due to following reasons..
1. Poor drug compliance( irregular treatment)
2. inadequate Treatment coverage
3. Uncommon condition like Pheochromocytoma
For that Ambulatory BP monitoring at home will be beneficial and consult one cardiologist for evaluation of cause