Re: Lymphoma Itch
I don't think you got a reason to be worried. There are lots of much more common causes of itching than lymphoma, amongst probably thousands, lymphoma is at the bottom of the list. Skin conditions, allergies (like you have), as well as stress and anxiety are undoubtedly likelier causes to what you describe. Your skin conditions may explain your slightly enlarged nodes (which are likely to withdraw once the underlying causes is resolved).
I assume only lymphoma patients can accurately describe and distinguish this not quite characteristic itching supposedly associated with the disease, although many don't experience it. Weight loss, fever, prominent and significantly out-of-proportion enlarged or enlarging node(s) are more common, indicative and worrisome symptoms. If you experience the latter (of which from reading your post, I believe you do not) in conjunction with the others, being worried may be warranted, although being worried by itself doesn't really help. Further testing is then needed.
I hope this helps.