Urinary

Basic symptoms

排尿痛

おしっこをするときに痛いです。

おしっこをするときにいたいです。

It hurts when I urinate.

The most basic phrase — a common symptom of cystitis.

Suggested Department

Urology

頻尿

トイレが近いです。頻尿です。

トイレがちかいです。ひんにょうです。

I need to urinate frequently.

Can be caused by cystitis, diabetes, and other conditions.

Suggested Department

Urology

By symptom type

尿意切迫感

急にトイレに行きたくなって我慢できません。

きゅうにトイレにいきたくなってがまんできません。

I get a sudden, urgent need to urinate.

A common phrase for cystitis and overactive/irritable bladder.

Suggested Department

Urology

尿が少ない

尿の量が少ないです。

にょうのりょうがすくないです。

I'm passing less urine than usual.

If accompanied by thirst and dizziness, it may be a sign of dehydration.

Suggested Department

Urology

尿が濁る

尿が濁っています。

にょうがにごっています。

My urine looks cloudy.

A common presentation of urinary tract infections.

Suggested Department

Urology

残尿感

排尿した後も、まだ出そうな感じがします。

はいにょうしたあとも、まだでそうなかんじがします。

I feel like I haven't fully emptied my bladder after urinating.

A common phrase for cystitis and prostate problems.

Suggested Department

Urology

尿が出にくい

尿が出にくいです。

にょうがでにくいです。

I have difficulty urinating.

Commonly caused by an enlarged prostate — if it progresses to a complete inability to urinate, it's an emergency; see the warning signs section below.

Suggested Department

Urology

夜間尿

夜中に何度もトイレに起きます。

よなかになんどもトイレにおきます。

I wake up multiple times at night to urinate.

Can be related to the prostate, diabetes, or fluid intake habits.

Suggested Department

Urology

尿の色が濃い

尿の色が濃いです。

にょうのいろがこいです。

My urine is darker than usual.

Can be caused by dehydration or liver/gallbladder problems — if accompanied by yellowing skin, seek medical care promptly.

Suggested Department

Urology

Warning signs

血尿

尿に血が混じっています。

にょうにちがまじっています。

There's blood in my urine.

Whether or not it's painful, seek medical care promptly to find the cause — painless blood in the urine shouldn't be ignored either.

⚠️ Worth paying attention to

Suggested Department

Urology

For women too, blood in urine should go to Urology, not OB-GYN — a common misconception. Consider OB-GYN only if there's lower abdominal pain or abnormal vaginal bleeding

尿がまったく出ない（尿閉）

何時間も尿がまったく出ません。膀胱が張って苦しいです。

なんじかんもにょうがまったくでません。ぼうこうがはってくるしいです。

I haven't been able to urinate at all for hours, and my bladder feels painfully full.

A completely different level of emergency from 'difficulty urinating' — seek medical care immediately, don't delay.

⚠️ Danger sign — could be life-threatening

Suggested Department

Emergency / Call ambulance (119)Urology

発熱と背中・腰の痛みを伴う排尿症状

熱があって、背中や腰も痛くて、排尿時にも症状があります。

ねつがあって、せなかやこしもいたくて、はいにょうじにもしょうじょうがあります。

Fever along with back/flank pain and urinary symptoms.

May be pyelonephritis (infection that has spread to the kidneys) — more serious than simple cystitis and prone to progressing to a body-wide infection. Seek medical care promptly; severe cases may need hospitalization for IV treatment.

⚠️ Worth paying attention to

Suggested Department

Urology

突然の激しい脇腹・腰の痛み

突然、脇腹や腰に激しい痛みが起こりました。

とつぜん、わきばらやこしにはげしいいたみがおこりました。

Sudden, severe pain in my side or lower back.

A classic presentation of urinary tract stones — the pain is severe but the stone itself is usually not life-threatening. Still, seek medical care promptly for evaluation and pain relief.

⚠️ Worth paying attention to

Suggested Department

Emergency / Call ambulance (119)UrologyInternal Medicine (general entry point when unsure)

Sudden severe flank/back pain — especially with nausea, cold sweat, restlessness, or blood in urine — go straight to the ER or call an ambulance rather than deciding which clinic to visit. If mild or not sudden, Urology or Internal Medicine first