What are the signs and symptoms of EEC syndrome? The Human Phenotype Ontology provides the following list of signs and symptoms for EEC syndrome. If the information is available, the table below includes how often the symptom is seen in people with this condition. You can use the MedlinePlus Medical Dictionary to look up the definitions for these medical terms. Signs and Symptoms Approximate number of patients (when available) Abnormality of dental enamel 90% Abnormality of the fingernails 90% Abnormality of the toenails 90% Aplasia/Hypoplasia of the eyebrow 90% Coarse hair 90% Dry skin 90% Lacrimation abnormality 90% Reduced number of teeth 90% Taurodontia 90% Thick eyebrow 90% Aplasia/Hypoplasia of the skin 50% Corneal erosion 50% Inflammatory abnormality of the eye 50% Renal hypoplasia/aplasia 50% Slow-growing hair 50% Abnormality of the eyelid 7.5% Abnormality of the middle ear 7.5% Anterior hypopituitarism 7.5% Aplasia/Hypoplasia of the nipples 7.5% Aplasia/Hypoplasia of the thumb 7.5% Aplasia/Hypoplasia of the thymus 7.5% Breast aplasia 7.5% Cognitive impairment 7.5% Displacement of the external urethral meatus 7.5% External ear malformation 7.5% Fine hair 7.5% Finger syndactyly 7.5% Hypohidrosis 7.5% Lymphoma 7.5% Proximal placement of thumb 7.5% Sensorineural hearing impairment 7.5% Short stature 7.5% Intellectual disability 7% Abnormality of the nasopharynx - Absence of Stensen duct - Anal atresia - Autosomal dominant inheritance - Autosomal recessive inheritance - Bicornuate uterus - Bladder diverticulum - Blepharitis - Blepharophimosis - Blue irides - Broad nasal tip - Carious teeth - Central diabetes insipidus - Choanal atresia - Cleft palate - Cleft upper lip - Coarse facial features - Conductive hearing impairment - Cryptorchidism - Dacrocystitis - Death in infancy - Depressed nasal bridge - Depressed nasal tip - Duplicated collecting system - Ectodermal dysplasia - Fair hair - Flexion contracture - Frontal bossing - Generalized hypopigmentation - Growth hormone deficiency - Hand polydactyly - Hearing impairment - Heterogeneous - High axial triradius - Hoarse voice - Hydronephrosis - Hydroureter - Hyperkeratosis - Hypertelorism - Hypogonadotrophic hypogonadism - Hypoplasia of the maxilla - Hypoplastic fingernail - Hypoplastic nipples - Inguinal hernia - Malar flattening - Microcephaly - Microdontia - Micropenis - Microtia - Nail dystrophy - Nail pits - Oligodontia - Ovarian cyst - Photophobia - Prominent forehead - Rectovaginal fistula - Recurrent respiratory infections - Renal agenesis - Renal dysplasia - Selective tooth agenesis - Semilobar holoprosencephaly - Short digit - Single transverse palmar crease - Sparse axillary hair - Sparse eyebrow - Sparse eyelashes - Sparse pubic hair - Sparse scalp hair - Split foot - Split hand - Telecanthus - Thin skin - Toe syndactyly - Transverse vaginal septum - Ureterocele - Ureterovesical stenosis - Vesicoureteral reflux - Xerostomia - The Human Phenotype Ontology (HPO) has collected information on how often a sign or symptom occurs in a condition. Much of this information comes from Orphanet, a European rare disease database. The frequency of a sign or symptom is usually listed as a rough estimate of the percentage of patients who have that feature. The frequency may also be listed as a fraction. The first number of the fraction is how many people had the symptom, and the second number is the total number of people who were examined in one study. For example, a frequency of 25/25 means that in a study of 25 people all patients were found to have that symptom. Because these frequencies are based on a specific study, the fractions may be different if another group of patients are examined. Sometimes, no information on frequency is available. In these cases, the sign or symptom may be rare or common.