Ehlers-Danlos syndrome

Disease Description (Causes and Symptoms)

• Definition summary: Ehlers–Danlos syndrome (EDS) is a group of inherited disorders in which connective tissue becomes weak due to genetic defects in collagen synthesis or regulation. There are multiple subtypes, with diverse clinical manifestations and inheritance patterns.
• Main pathophysiology: Abnormalities in collagen (types I, III, V, etc.) or enzymes that process or regulate collagen (e.g., lysyl hydroxylase) reduce fibrous mechanical strength, resulting in structural vulnerability of the skin, blood vessels, internal organs, joints, and other tissues.
• Typical symptoms
  • Joint hypermobility (joint instability, recurrent dislocations, chronic pain)
  • Skin hyperextensibility and fragility (thin, easily stretched skin that scars and bruises easily)
  • Easy bruising and delayed wound healing
  • In some types, rupture of blood vessels, aneurysms, or rupture of organs or the uterus (especially the vascular type)
  • Eye and spinal abnormalities (scleral weakness, congenital scoliosis, etc., in some subtypes)
• Key genetic/clinical findings by type (summary)
  • Classical type (related to COL5A1/COL5A2): skin hyperextensibility, wide and thin scars, joint hypermobility
  • Hypermobile type: generalized joint hypermobility and pain (the causative gene is often unknown)
  • Vascular type (COL3A1): increased risk of arterial, organ, and uterine rupture; easy bruising; characteristic facial appearance
  • Kyphoscoliotic type (related to PLOD1): severe hypotonia and progressive scoliosis
  • Several other rare subtypes exist, including arthrochalasia and dermatosparaxis types

Treatment Methods and Precautions

• There is no definitive curative treatment. Treatment focuses on relieving symptoms, preventing complications, and managing risks (a multidisciplinary approach is needed).
• Medications
  • Vascular EDS: Celiprolol (a beta-blocker) may be considered because some studies have found evidence that it reduces arterial events (consultation with a physician and genetics and cardiovascular specialists is necessary).
  • Pain management: Non-opioid analgesics and, when necessary, specialized pain management; use of NSAIDs and anticoagulants requires caution in patients with a bleeding tendency.
  • Supplements: Although vitamin C intake has been reported to help connective tissue, the evidence is limited and it may be considered as a supportive recommendation.
• Procedures and surgery
  • If surgery is unavoidable, surgical techniques that take tissue fragility into account during incision and suturing are necessary (an experienced surgical team is recommended).
  • In the vascular type, invasive angiography (catheter-based) carries a risk of rupture, so noninvasive imaging such as CTA/MRA is preferred whenever possible.
  • Orthopedic interventions (joint stabilization surgery and spinal correction) carry high risks and the possibility of recurrence, so decisions should be made carefully.
• Nonpharmacological treatment and rehabilitation
  • Physical and occupational therapy: Improving muscle strength to stabilize the joints and appropriate exercise therapy are important (low-impact, strength-focused exercise).
  • Use of braces, walkers, and supports: Protecting the joints and maintaining activity.
  • Lifestyle management: Avoid contact sports and activities involving intense impact, wear protective equipment, and manage blood pressure (important in the vascular type).
• Pregnancy and childbirth
  • Pregnancy in high-risk subtypes such as the vascular type carries an increased risk of complications (uterine rupture and bleeding)—consultation with a specialized obstetrician and genetic counseling are necessary.
• Preventive recommendations and contraindications
  • Avoid unnecessary invasive procedures and surgical interventions; make advance plans among the care team before dental procedures and surgery
  • Use anticoagulants and antiplatelet agents cautiously (risk of bleeding and bruising)
  • In an emergency, immediately inform medical personnel that you have been diagnosed with EDS

Outpatient Visit Checklist (Including Items to Bring and Sample Questions)

• Items to bring
  • List of current medications and supplements (including doses and administration times)
  • Records of previous surgeries, hospitalizations, bleeding, and vascular events (such as aneurysms and ruptures)
  • Family history (similar symptoms, early death, sudden death, etc.)
  • Copies of previous genetic testing, echocardiography, and vascular imaging (CT/MR) results
  • Photos taken when symptoms occur (wounds, bruises, scars, joint deformities, etc.) and notes on the frequency of pain and dislocations
• Recommended symptom-change records
  • Frequency of joint dislocations, pain intensity (daily/weekly), and a list of limitations in daily functioning
  • Relevant history, including menstruation, pregnancy, and surgery
• Simple assessment that patients can perform themselves during an outpatient visit
  • Joint hypermobility assessment (for example, it is convenient to calculate the Beighton score in advance)
• Sample questions (it is useful to bring a list of questions to ask the doctor in advance)
  • "Which genetic tests are recommended for my symptoms?"
  • "Which tests should be used to monitor cardiovascular complications, and how often should they be performed?"

General Sample Questions to Ask the Doctor

• What are the main side effects and expected benefits of this medication (or treatment)?
• Which genetic tests do you recommend to confirm my type of EDS? If the test results are available, what do they mean for my family?
• How often should I undergo follow-up tests in my case, such as echocardiography or CT/MR?
• What specific restrictions should I follow regarding exercise and daily activities?
• What is the best approach to managing chronic pain?

Disease-Specific Sample Questions

• (For suspected or diagnosed vascular type) "Based on the results of my COL3A1 genetic test, how do you estimate my risk of vascular rupture? Is celiprolol recommended in my situation?"
• (For the hypermobile type or frequent chronic dislocations) "What type of physical therapy program (type and frequency of exercise) would be most helpful for stabilizing my joints? When should surgical joint fixation be considered?"

Additional Guidance

• Genetic counseling: Genetic counseling is recommended for family planning, pregnancy, and assessing risks to siblings.
• Emergency card: Carrying a medical information card listing the diagnosis and precautions (e.g., contraindication of coronary intervention in the vascular type) can be helpful in an emergency.
• A multidisciplinary team approach (including a genetics specialist, cardiologist, surgeon, orthopedic surgeon, dermatologist, physical therapist, and others) is recommended.