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Hot Spring Contraindications | Conditions & Situations to Avoid Bathing

Published May 6, 2026·1min read

Certain medical conditions and physical states are considered contraindications for hot spring bathing — meaning bathing could pose a risk to your health. Based on the Ministry of the Environment guidelines, here is what to know before you soak.

Table of Contents
  1. General Contraindications (All Spring Types)
  2. Contraindications by Spring Type
  3. Mandatory Posting of Contraindications

CHECK YOUR CONDITION

Check Whether Any Apply to You

※ This is not medical advice. If any item applies, please consult your doctor before bathing.

General Contraindications (All Spring Types)

  • Acute illness (especially if feverish)
  • Active tuberculosis
  • Malignant tumours
  • Serious heart disease
  • Respiratory failure
  • Kidney failure
  • Bleeding disorders
  • Severe anaemia
  • Pregnancy (especially first and third trimesters)

Contraindications by Spring Type

Spring TypeKey Contraindications
Acidic springsSensitive skin / mucous membranes, eye conditions
Sulfur springsCaution with copper / iron items (discolouration); severe chronic dermatitis
Radioactive springs (radon)Undergoing radiation therapy, pregnancy
Iron-containing springsIron oxide may stain clothing
Source: Ministry of the Environment "Guidelines for Safe Hot Spring Use"

Mandatory Posting of Contraindications

Under Article 18 of the Hot Spring Act, facilities must display contraindications and bathing precautions in a clearly visible location. Always read the posted notices before bathing. When trying a spring type for the first time, start with a short soak to gauge your body's reaction.

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References

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