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Living with Cutaneous photosensitivity-lethal colitis syndrome

A rare condition with sun sensitivity from infancy and severe, recurring bowel inflammation.

Understanding Cutaneous photosensitivity-lethal colitis syndrome

Cutaneous photosensitivity-lethal colitis syndrome is a rare inflammatory bowel disease with early sun sensitivity and severe, recurring colitis.

Sun exposure causes red, blistering sores on the face. The colitis (inflammation of the colon) is severe and recurring and leads to diarrhea that does not respond to treatment. It starts in newborns and infants. GARD notes there have been no further descriptions in the medical literature since 1991.

Signs & symptoms

GARD doesn't list a full symptom list for this condition. Its summary mentions these:

  • Sun sensitivity from early life
  • Red, blistering sores on the face after sun
  • Severe, recurring colitis
  • Diarrhea that is hard to treat

Not everyone has every symptom. GARD's list comes from the Human Phenotype Ontology.

Diagnosis

  1. Talk with your doctor

    Share the symptoms you've noticed, when they started and your family health history. Notes and photos can help.

  2. See a specialist

    Specialists who may be involved include digestive system specialists.

  3. Ask which tests can help

    Your care team will decide which exams and tests can confirm the diagnosis.

Care & treatment

Care team
Digestive system specialists (gastroenterologists)
Expert care
Ask about multidisciplinary care centers for rare conditions
Treatment
GARD doesn't list specific treatments for this condition. Your care team will tailor care to your symptoms.
Research
Clinical trials and observational studies may be options. See the research section below.

General information, not medical advice. Your care team makes the decisions.

Everyday life

Living with a rare condition is easier with support.

  • Connect with rare disease patient organizations for support
  • Keep notes on symptoms, changes and questions for appointments
  • Ask about patient registries that help research
  • Look into financial aid and travel resources for care visits
Bring these questions to your next doctor visit
How can we protect my child from the sun?
What treatments can help the colitis and diarrhea?
Would genetic testing help our family?

Quick facts

Symptoms usually startNewborn and as an Infant
InheritanceAutosomal Recessive

GARD lists autosomal recessive inheritance, meaning a child inherits a changed copy of the gene from each parent. GARD doesn't name a gene.

Gastrointestinal

Patient organizations

Rare-disease groups that can help

Source: NIH GARD · Cutaneous photosensitivity-lethal colitis syndromeGARD ID 1633 · GARD page updated September 2026 · Plain-language summary by Know Rare; editorial review pending. General information, not medical advice.

You are more than your diagnosis

Perspectives from people navigating life with Cutaneous photosensitivity-lethal colitis syndrome.

Explore the Cutaneous photosensitivity-lethal colitis syndrome blog

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HealthSpark

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  • Eligibility is confirmed by the study team

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Powered by HealthSpark, our AI chat helper · Study information from ClinicalTrials.gov · Eligibility is confirmed by the study team.

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