suf ‧ fer ‧ er /ˈsʌf ə rə $ -ər/ BrE AmE noun [countable]
[ Word Family: noun : ↑ sufferer , ↑ suffering , ↑ sufferance ; verb : ↑ suffer ; adverb : ↑ insufferably ; adjective : ↑ insufferable ]
someone who suffers, especially from a particular illness ⇨ victim
sufferer from
sufferers from headaches
AIDS/cancer/asthma/arthritis etc sufferers
a support group for cancer sufferers