Skip to content
How It Works
Explore
Resources Ask a Question
Who It's For
Patients
Decode results, prep for appointments, weigh options.
Caregivers & advocates
Carry the research load for someone you love.
Providers & clinicians
Resources for patients in your practice.
Log In Ask a Question
PubMed This is a summary of 19 peer-reviewed journal articles Updated
Nephrology

Beyond the Surface: Symptoms and Hidden Health Risks

At a Glance

EEC syndrome causes visible signs like limb malformations and cleft palate, but also involves hidden health risks affecting the kidneys, eyes, and temperature regulation. Regular screening with specialists and active cooling strategies are critical to preventing long-term organ damage.

While the physical features of EEC syndrome are often the first thing people notice, there are “hidden” health risks that are just as important to manage. Understanding both the visible signs and the internal risks allows you to be the best advocate for your or your child’s health.

Visible Symptoms: The Outside Story

The “ectodermal” part of EEC syndrome refers to tissues that form the outer layers of the body. Because of this, symptoms are often visible on the skin, hair, and limbs.

  • Hands and Feet (Ectrodactyly): Many individuals are born with split-hand/split-foot malformation, where the middle fingers or toes are missing, or the hand/foot is divided by a central gap [1][2]. Fingers or toes may also be fused together (syndactyly) [1].
  • Facial Clefting: This includes a cleft lip (a gap in the upper lip) or a cleft palate (a gap in the roof of the mouth) [1][2]. These can affect feeding, speech, and dental alignment [3][4].
  • Skin, Hair, and Nails: The skin may be thin, dry, or prone to rashes [5]. Hair is often sparse, fine, or light-colored, and nails may be brittle, ridged, or slow-growing [5][1]. Heavy moisturizers and gentle skin-care routines are essential for daily management.
  • Teeth: Dental issues are very common, including hypodontia (missing teeth) or teeth that are small and peg-shaped [6][7].

Hidden Health Risks: The Inside Story

Some of the most critical aspects of EEC syndrome cannot be seen just by looking. These “hidden” risks require proactive screening and specialized care.

1. Kidney and Bladder (Genitourinary) Risks

Many individuals with EEC syndrome have structural differences in their urinary tract that may not cause symptoms initially [5][8].

  • Hydronephrosis: This is a condition where urine “backs up,” causing the kidneys to stretch and swell [8][9].
  • Megaureter: The tubes that carry urine from the kidney to the bladder (ureters) may be abnormally wide [5][8].
  • Bladder Issues: Some have a “flaccid megacystis,” where the bladder is very large and doesn’t empty properly because the muscle (detrusor) is weak [8].
  • Action Step: Every person with EEC should have a renal ultrasound to screen for these issues, as they can lead to permanent kidney damage if left untreated [5][9].

2. Ocular (Eye) Complications

The eyes are often significantly affected in EEC syndrome, and lifelong monitoring is vital to protect vision.

  • Tear Duct Obstruction: The “plumbing” for tears may be blocked, leading to watery eyes or frequent infections [2][10].
  • Meibomian Gland Deficiency: These glands produce the oil that keeps tears from evaporating. Without enough oil, eyes become severely dry and irritated [10][11].
  • Limbal Stem Cell Deficiency (LSCD): This is a serious risk where the “source” for new clear corneal cells is missing. Over time, the clear front of the eye (cornea) can become scarred or cloudy, which can lead to blindness if not managed by an eye specialist [10][12].

3. Temperature Regulation (Hypohidrosis)

Most people with EEC syndrome have hypohidrosis, which means they have fewer sweat glands or glands that do not work correctly [13][14].

  • The Risk: Sweat is the body’s primary way of cooling down. Without it, dangerous overheating (hyperthermia) can happen very quickly, even in mild weather or with a minor fever [13][15].
  • Signs of Overheating: Watch for extreme redness (flushing) in the face, irritability, lethargy (extreme tiredness), or a high body temperature without any other signs of illness [16][17].
  • Safety Tip: Use objective measurements (a reliable thermometer) rather than just feeling the skin, as the skin may feel “cool” even if the internal core temperature is dangerously high [18].
  • Actionable Cooling Strategies: For daily lifestyle management, invest in cooling vests, carry a spray bottle with a portable fan, avoid prolonged outdoor activities during peak summer heat, and always have access to air conditioning and cold water.

4. Hearing and Ear Risks

Chronic middle ear infections are common because of how the face and palate develop [5][19]. A serious but rare risk is a cholesteatoma, an abnormal skin growth in the middle ear that can damage hearing if not treated surgically [19]. Routine screening with an ENT is required.

Common questions in this guide

Why is overheating a serious risk for people with EEC syndrome?
People with EEC syndrome often have hypohidrosis, meaning their sweat glands do not work properly. Since sweat is the body's primary way to cool down, they can quickly experience dangerous overheating and require proactive cooling strategies.
What kidney and bladder issues are associated with EEC syndrome?
Structural differences in the urinary tract, such as hydronephrosis and enlarged ureters, are common but may not initially cause symptoms. Early screening with a renal ultrasound is vital to prevent these structural issues from causing permanent kidney damage.
How does EEC syndrome affect the eyes and vision?
The condition can cause blocked tear ducts, severe dry eyes from oil gland deficiencies, and limbal stem cell deficiency. Lifelong monitoring by an ophthalmologist is essential to prevent corneal scarring and potential vision loss.
What are the most common visible physical signs of EEC syndrome?
Common visible features include split-hand/split-foot malformations, cleft lip or palate, sparse hair, brittle nails, and missing or uniquely shaped teeth. These ectodermal symptoms require specialized skin, dental, and surgical care.
Does EEC syndrome cause ear infections or hearing loss?
Yes, changes in facial and palate development make chronic middle ear infections very common. Patients also have a risk for an abnormal middle ear growth called cholesteatoma, requiring routine ear exams by an ENT specialist.

Questions to Ask Your Doctor

Curated prompts to bring to your next appointment.

  1. 1.When should the first renal ultrasound take place, and how often should it be repeated to monitor for things like hydronephrosis?
  2. 2.Can you refer us to an ophthalmologist who has experience with 'limbal stem cell deficiency' and 'meibomian gland' health?
  3. 3.What are the specific signs of overheating I should watch for, given the risk of hypohidrosis?
  4. 4.How should we monitor dental development, and when should the first dental visit occur?
  5. 5.Is a baseline hearing test needed to screen for middle ear issues or cholesteatoma?

Questions For You

Tap a prompt to share your answer — we'll use it plus this page's context to start a tailored conversation.

References

References (19)
  1. 1

    Tooth defects of EEC and AEC syndrome caused by heterozygous TP63 mutations in three Chinese families and genotype-phenotype correlation analyses of TP63-related disorders.

    Zheng J, Liu H, Zhan Y, et al.

    Molecular genetics & genomic medicine 2019; (7(6)):e704 doi:10.1002/mgg3.704.

    PMID: 31050217
  2. 2

    A spectrum of TP63-related disorders with eight affected individuals in five unrelated families.

    Soğukpınar M, Utine GE, Boduroğlu K, Şimşek-Kiper PÖ

    European journal of medical genetics 2024; (68()):104911 doi:10.1016/j.ejmg.2024.104911.

    PMID: 38281558
  3. 3

    Two case reports with literature review of the EEC syndrome: Clinical presentation and management.

    Augello M, Berg BI, Albert Müller A, Schwenzer-Zimmerer K

    Case reports in plastic surgery & hand surgery 2015; (2(3-4)):63-6 doi:10.3109/23320885.2015.1086273.

    PMID: 27252974
  4. 4

    MOLECULAR GENETICS OF CLEFT LIP AND PALATE: A REVIEW.

    Oboli GO, Chukwuma DI, Fagbule OF, et al.

    Annals of Ibadan postgraduate medicine 2020; (18(1)):S16-S21.

    PMID: 33071691
  5. 5

    Ectrodactyly, Cleft Lip/Palate, and Urinary Anomalies With a Tumor Protein p63 (TP63) Mutation: A Case Report and Literature Review.

    Mohamed RH, Khalifa HM, Hassan HY, et al.

    Cureus 2025; (17(9)):e92888 doi:10.7759/cureus.92888.

    PMID: 41141084
  6. 6

    Intermediate Phenotype between ADULT Syndrome and EEC Syndrome Caused by R243Q Mutation in TP63.

    Otsuki Y, Ueda K, Satoh C, et al.

    Plastic and reconstructive surgery. Global open 2016; (4(12)):e1185 doi:10.1097/GOX.0000000000001185.

    PMID: 28293528
  7. 7

    A novel mutation (c.1010G>T; p.R337L) in TP63 as a cause of split-hand/foot malformation with hypodontia.

    Jin JY, Zeng L, Li K, et al.

    The journal of gene medicine 2019; (21(10)):e3122 doi:10.1002/jgm.3122.

    PMID: 31420900
  8. 8

    Genitourinary malformations: an under-recognized feature of ectrodactyly, ectodermal dysplasia and cleft lip/palate syndrome.

    Hyder Z, Beale V, O'Connor R, Clayton-Smith J

    Clinical dysmorphology 2017; (26(2)):78-82 doi:10.1097/MCD.0000000000000172.

    PMID: 28166087
  9. 9

    Case report: Prenatal diagnosis of Ectrodactyly-Ectodermal dysplasia-Cleft syndrome (EEC) in a fetus with cleft lip and polycystic kidney.

    Biwei H, Min S, Yanlin W, et al.

    Frontiers in genetics 2022; (13()):1002089 doi:10.3389/fgene.2022.1002089.

    PMID: 36386837
  10. 10

    Infrared meibography and molecular assessment of p63 gene mutations in a Mexican patient with EEC syndrome.

    Garza-Leon M, León-Cachón RBR, Villafuerte-de la Cruz R, Martínez-Treviño DA

    Archivos de la Sociedad Espanola de Oftalmologia 2018; (93(11)):562-566 doi:10.1016/j.oftal.2018.06.005.

    PMID: 30025988
  11. 11

    Ocular Manifestations of Ectrodactyly-Ectodermal Dysplasia-Cleft Palate (EEC) Syndrome: A Case Report.

    Mohd Jais MF, Wan Dien T, Ang WJ, et al.

    Cureus 2023; (15(3)):e36086 doi:10.7759/cureus.36086.

    PMID: 37065317
  12. 12

    Innovative Therapeutic Approaches for the Treatment of the Ocular Morbidities in Patients with EEC Syndrome.

    Barbaro V, Bonelli F, Ferrari S, et al.

    Cells 2023; (12(3)) doi:10.3390/cells12030495.

    PMID: 36766837
  13. 13

    A recurrent missense mutation in the EDAR gene causes severe autosomal recessive hypohidrotic ectodermal dysplasia in two consanguineous Kashmiri families.

    Sadia , Foo JN, Khor CC, et al.

    The journal of gene medicine 2019; (21(9)):e3113 doi:10.1002/jgm.3113.

    PMID: 31310406
  14. 14

    Mutational spectrum of EDA and EDAR genes in a cohort of Mexican mestizo patients with hypohidrotic ectodermal dysplasia.

    Monroy-Jaramillo N, Abad-Flores JD, García-Delgado C, et al.

    Journal of the European Academy of Dermatology and Venereology : JEADV 2017; (31(7)):e321-e324 doi:10.1111/jdv.14107.

    PMID: 28045201
  15. 15

    Clinical, trichoscopy, and light microscopic findings in hypohidrotic ectodermal dysplasia: Report of 21 patients and a review of the literature.

    Peña-Romero AG, Sáez-de-Ocariz M, Toussaint-Caire S, et al.

    Pediatric dermatology 2021; (38(2)):442-448 doi:10.1111/pde.14415.

    PMID: 33085121
  16. 16

    Severe heat stroke with multiorgan failure following collapse in a sauna.

    McIver WJ, Zia M

    BMJ case reports 2025; (18(1)) doi:10.1136/bcr-2024-262069.

    PMID: 39773956
  17. 17

    Severe heat stroke complicated by multiple cerebral infarctions: a case report.

    Kamidani R, Okada H, Kitagawa Y, et al.

    Journal of medical case reports 2021; (15(1)):24 doi:10.1186/s13256-020-02596-2.

    PMID: 33504362
  18. 18

    Cooling Rates of Hyperthermic Humans Wearing American Football Uniforms When Cold-Water Immersion Is Delayed.

    Miller KC, Di Mango TA, Katt GE

    Journal of athletic training 2018; (53(12)):1200-1205 doi:10.4085/1062-6050-398-17.

    PMID: 30562055
  19. 19

    Evolution of Acquired Middle Ear Cholesteatoma in Patients With Ectrodactyly, Ectodermal Dysplasia, Cleft Lip/Palate (EEC) Syndrome.

    Lourencone LFM, Koga FDT, Oliveira EB, et al.

    Otology & neurotology : official publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology 2018; (39(8)):e679-e682 doi:10.1097/MAO.0000000000001921.

    PMID: 30113563

This page provides educational information about EEC syndrome symptoms and health risks. Always consult your pediatric specialists and healthcare team for personalized medical advice and screening recommendations.

Get notified when new evidence is published on EEC syndrome.

We monitor PubMed for new peer-reviewed studies on this topic and email a short summary when something meaningful changes.