Reactive Hyperaemia ...found on my medical.reports today 13th Dec 2023

Attended GP appointment to ask for further referral about Erythromialgia and Raynauds
Due to clinic closed.
Was given letter sent to my gp.
I did not know this existed until I read it on my.letter.
I looked it up on wikipedia.
I could not find it on NHS choices
Here is copy paste from wikipedia.
Lool up.more if you feel it describes you.
I am going for blood tests to rule out few factors.
Fingers crossed for further help.

Hyperaemia (also hyperemia) is the increase of blood flow to different tissues in the body. It can have medical implications but is also a regulatory response, allowing change in blood supply to different tissues through vasodilation. Clinically, hyperaemia in tissues manifests as erythema (redness of the skin) because of the engorgement of vessels with oxygenated blood.[1] Hyperaemia can also occur due to a fall in atmospheric pressure outside the body. The term is from Greek ὑπέρ (hupér) ‘over’ + αἷμα (haîma) ‘blood’.
HyperemiaOther namesHyperæmia, hyperaemiaErythema can be a symptom of hyperaemia.

Regulation of blood flow