What are the symptoms of Myotonic dystrophy type 1 ?
What are the signs and symptoms of Myotonic dystrophy type 1? The Human Phenotype Ontology provides the following list of signs and symptoms for Myotonic dystrophy type 1. 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) Arrhythmia 90% EMG abnormality 90% Hypertonia 90% Mask-like facies 90% Myotonia 90% Skeletal muscle atrophy 90% Abnormality of the endocrine system 50% Cataract 50% Cognitive impairment 50% Facial palsy 50% Muscular hypotonia 50% Respiratory insufficiency 50% Abnormal hair quantity 7.5% Abnormality of the hip bone 7.5% Abnormality of the upper urinary tract 7.5% Cryptorchidism 7.5% Hernia of the abdominal wall 7.5% Hydrocephalus 7.5% Non-midline cleft lip 7.5% Strabismus 7.5% Atrial flutter 4/11 Autosomal dominant inheritance - Cerebral atrophy - Cholelithiasis - Decreased fetal movement - Dysphagia - Excessive daytime sleepiness - Facial diplegia - Feeding difficulties in infancy - First degree atrioventricular block - Frontal balding - Hypogonadism - Intellectual disability, progressive - Intellectual disability, severe - Obsessive-compulsive trait - Polyhydramnios - Respiratory distress - Testicular atrophy - 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.