I have a high fever.
FEB-bre AL-ta — double 'b', short. 'Alta' = high (feminine).
Tell a doctor, pharmacist, or anyone you need help from. A clear and universal symptom description.
'Ho la febbre' uses 'avere' + definite article 'la'. 'Alta' means high. In Italy fever is measured in Celsius: 37°C normal, 37.5°C low fever, 38°C+ fever, 39°C+ high fever. 'Ho trentanove di febbre' = I have a fever of 39 degrees.
Ho trentanove di febbre da ieri.
I have had a fever of thirty-nine since yesterday.
Give temperature and duration for better assessment
La febbre non scende con la tachipirina.
The fever is not going down with paracetamol.
Important — signals need for stronger treatment
Ho la febbre e i brividi.
I have a fever and chills.
Chills often accompany fever — important symptom cluster
Italian doctors often ask about 'carattere della febbre' — whether it is continuous ('continua'), intermittent ('intermittente'), or spiking ('a picchi'). The pattern helps diagnosis. 'Tachipirina' is Italy's most trusted brand-name paracetamol.