How do you say "Since yesterday" in Japanese?

Quick use

Use きのうからです (kinou kara desu) at the hospital or clinic when the doctor asks when the symptom started and the answer is “since yesterday.”

Chunk or pattern

• This is a fixed timing response.
• Learn the whole line first.
• It is especially useful in short Q&A at a clinic.

Core words

• きのう: yesterday.
• から: since / from.

Helper words and endings

• です: polite sentence ending.

Practical note

This works best as a short answer after you already said the symptom, for example after あたまがいたいです.