It may make people turn pale (7)

I believe the answer is:

anaemia

I'm a little stuck... Click here to teach me more about this clue!

'pale' is the definition.
(I've seen this before)

I don't understand how the remainder of the clue works.

(Other definitions for anaemia that I've seen before include "Lack of red cells" , "Blood deficiency condition" , "Paleness resulting from lack of red corpuscles" , "Result of iron deficiency" , "Llama relative, its wool" .)

I've seen this clue in The Irish News.

Want a hint initially instead of a full solution? Install my app