Browsing: Rare Diseases

Rare DiseasesThe page provides quick access to a list of common rare and neglected diseases, syndromes, health conditions, and other topics of health importance. The list is organized alphabetically. Links are provided to respective diseases sections that serve as a comprehensive and ultimate guide about the disease or health condition.

According to the World Health Organization (WHO), rare diseases are defined as lifelong disease or disorder which has a prevalence of 1 or less in a population of 1000 people. In the United States, a prevalence of less than 200,000 cases indicates a medical condition to be rare. Rare diseases are also referred as orphan diseases as various drug companies do not want to develop any treatment or medication for it.

Majority of rare diseases occur due to genetic mutations in genes or chromosomes of an individual. Some cases have been reported where rare diseases occur due to an infection or due to rare cancers or autoimmune diseases. These autoimmune diseases do not have any inheritable significance.

Most rare diseases cannot be cured and lead to death of an individual or shortened life expectancy. Till date, all aspects of a rare disease have not been fully identified and understood by scientists, therefore, it is difficult to diagnose, treat and prevent occurrence of such diseases.

Some common rare diseases which have a widespread occurrence are acquired hemophilia, alkaptonuria, alpha and beta thalassemia, cystic fibrosis, Duchene muscular dystrophy, stargardt disease, sickle cell disease, nipah virus infection etc.

Retinoblastoma symptoms

Achalasia involves retention of food which can cause certain bacterial infections that result in chronic esophagitis which makes the epithelium more sensitive to carcinogens. This increases the chances of developing esophageal cancer. Read more in this article to understand the link between achalasia and cancer of the esophagus.

There is no cure for achalasia but treatments are available to manage the symptoms. The goal of these treatments is to reduce the difficulty in swallowing by opening the lower esophageal sphincter. Patients are treated on the basis of the types of achalasia they suffer with as different types of the disease may need different treatment.

Human Brain

Achalasia is a rare disorder of the esophagus. It becomes difficult to swallow any type of solid or liquid food if a person has achalasia. It is observed that the nerves in the esophagus become damaged and the muscular valve between the esophagus and lower esophageal sphincter (LES) or the stomach is not relaxed.

Genetic Testing For Achondroplasia

Achondroplasia is often a result of new gene alterations or mutations. These changes can be identified with the help of molecular genetic tests. Genetic testing helps in the identification of manipulation in chromosomes, genes, or proteins which can help a doctor to rule out or detect a suspected genetic condition.

Achondroplasia life expectancy is normal and slow growth of children does not affect the prognosis. However, if a child is suffering from homozygous achondroplasia he or she is expected to survive only for the first year of his or her life in most cases. Growth is studied in patients on parameters such as height, BMI, weight, etc.