= Solution
\b[Relieve <urinary retention> promptly and gently, while distinguishing transient <spasm> from a fixed <urethral stricture> or another obstruction.] The historical label <spasmodic urethral stricture> describes a functional component of obstruction; it does not prove that the <urethra> contains a permanent fibrotic narrowing.
Ask about the onset, previous attacks, instrumentation, injury, discharge, medications and previous difficulty passing <urine>. Examine for a distended painful <urinary bladder>, infection and trauma. Current <bladder ultrasonography> can confirm retention and estimate distension without repeatedly attempting instrumentation. A history of easy passage at other times may support a transient component, but neither that history nor failure to pass a catheter excludes an underlying anatomical lesion.
For the 1864 therapeutic framework, reassurance, warmth, a warm bath and relief of <pain> were intended to relax muscular <spasm>. An earlier clinical account documents <opium> and the warm bath, while warning that the bath was unreliable.<Diseases of the Urinary Organs (1842)>[Discussion of acute retention and spasmodic obstruction]{ref} Period use of <opium> belongs to that historical account; it must not be assumed to be harmless, since <opioids> can themselves contribute to <urinary retention> and sedation. Such measures should not postpone drainage of a persistently overfilled <urinary bladder>. A lubricated catheter, handled by a skilled operator, should be advanced gently rather than forced through resistance. Producing bleeding or a false passage can convert an initially functional problem into substantial injury.
Current guidance calls for immediate catheterisation in acute <urinary retention>, with attention to contraindications and the cause. Suspected <urethral trauma>, major resistance or repeated failure calls for specialist help, not escalating force. Depending on the findings, guided urethral catheterisation or <suprapubic catheterisation> may be appropriate. The latter requires a suitably localised distended <urinary bladder> and assessment of contraindications; it is not an instruction for blind puncture.<Lower urinary tract symptoms in men by NICE>[CG97, §1.7.1: immediate catheterisation for acute retention]{ref}<Indwelling catheterisation in adults by EAUN (2024)>[§§4.3–4.6: urethral risks and suprapubic indications and contraindications]{ref}
After decompression, address the precipitant: infection, painful local inflammation, medication effects, a fixed <urethral stricture> or another outlet disorder. Recurrent attacks merit investigation rather than repeated labelling as <spasm>. An incision or a course of repeated forceful dilatation is not justified merely by the word spasmodic. <Diseases of the Urinary Organs (1842)>[Discussion of retention: opium and the warm bath, with contemporary reservations about the bath]{ref} The principle common to the historical and modern reasoning is to remove the obstruction with the least injury; modern assessment makes the anatomical and infective distinctions more reliable.
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