Quick answer
To say something hurts: У меня́ боли́т + the body part in the nominative. У меня́ боли́т голова́ — literally “at me the head hurts”.
The body
Feeling unwell
Getting help
Saying what hurts
Typical mistakes
Я боли́т голова́.
У меня́ боли́т голова́.
The person takes у + genitive, the body part is the subject.
У меня́ боли́т зу́бы.
У меня́ боля́т зу́бы.
Plural subject, plural verb.
Check yourself
How do you say “I have a headache”?