Itching to see Indian city with unlimited enchantments (8)
I believe the answer is:
pellagra
'itching' is the definition.
(I've seen this before)
'indian city with unlimited enchantments' is the wordplay.
'indian city' becomes 'agra' (I've seen this before).
'with' means one lot of letters go next to another.
'unlimited' indicates the central letters (discard the edges or 'limits' of the word).
'enchantments' becomes 'spells' ('spell' can be a synonym of 'enchantment').
The central letters of 'spells' are 'pell'.
'agra' after 'pell' is 'PELLAGRA'.
'to see' is the link.
(Other definitions for pellagra that I've seen before include "ill with this?" , "Itching" , "Wasting disease, caused by a Vitamin B deficiency" .)