Right to stop daily cake: it causes skin condition! (7)
I believe the answer is:
sunburn
'it causes skin condition' is the definition.
(a sunburn is a skin complaint)
'right to stop daily cake' is the wordplay.
'right' becomes 'r' (common abbreviation).
'to stop' means one lot of letters goes inside another.
'daily' becomes 'sun' (daily UK newspaper).
'cake' becomes 'bun' (bun is a type of cake).
'sun'+'bun'='sunbun'
'r' going within 'sunbun' is 'SUNBURN'.
(Other definitions for sunburn that I've seen before include "Redness of the skin caused by solar rays" , "Overexposure to UV" , "Painful browning of the skin" , "Reddening of skin" , "Effect of too much UV" .)