I don't know whether headaches are more common with CLL unless it is a side effect from illnesses, particularly respiratory infections to which we may be more prone due to our compromised immunity. Perhaps the stress of living with CLL might be a cause, but according to this article, the "Infrequent episodic Tension Type Headache (TTH) does not appear to be strongly associated with psychological stress, despite this common belief. Chronic TTH has a stronger association with higher psychological distress, but it is unclear whether this is a cause or effect of having long-term disabling headaches."
Michael Vagg, Clinical Senior Lecturer at Deakin University School of Medicine & Pain Specialist at Barwon Health, Melbourne, Australia explains about the three different types of headache, what is thought to cause them and what may help relieve the pain:
Photo: I don't think this rare albino kangaroo is particularly worried about anything and the peacock seems pretty relaxed too!