noun
BAD : If I drink coffee, I get headache.
GOOD : If I drink coffee, I get a headache.
◆◆◆
Headache is a countable noun: 'I woke up with a terrible headache.' 'My wife suffers from headaches.'
noun
BAD : If I drink coffee, I get headache.
GOOD : If I drink coffee, I get a headache.
◆◆◆
Headache is a countable noun: 'I woke up with a terrible headache.' 'My wife suffers from headaches.'
Longman Common Errors English vocabulary. Английский словарь распространенных ошибок Longman. 2012