Apodia is a software platform designed to help businesses manage their customer relationships. It provides a suite of tools to help businesses track customer interactions, manage customer data, and automate customer service processes. Apodia also ...

Apolipoprotein A-I deficiency is a rare genetic disorder that affects the body's ability to metabolize fats. It is caused by a mutation in the APOA1 gene, which is responsible for producing the apolipoprotein A-I protein. This protein is essential...

Apparent mineralocorticoid excess (AME) is a rare genetic disorder that affects the body's ability to regulate salt and water balance. It is caused by a mutation in the gene that codes for the enzyme 11-beta-hydroxysteroid dehydrogenase type 2 (11...

Appendiceal cancer and tumors are a type of cancer that affects the appendix, a small organ located in the lower right side of the abdomen. Appendiceal cancer is a rare form of cancer, accounting for less than 1% of all cancers in the United State...

The appendix is a small, worm-like appendage attached to the colon. Appendicitis occurs when bacteria invade and infect the wall of the appendix. The most common complications of appendicitis are rupture, abscess, and peritonitis....

Jejunal Atresia is a rare genetic disorder. Patients with this disorder are born with a partial absence of the fold of the stomach membrane that connects the small intestine to the back wall of the abdomen. As a result, one of the three portions o...

Apraxia is a neurological disorder that affects a person's ability to plan and execute motor tasks. It is caused by damage to the parts of the brain that control movement, and can affect a person's ability to speak, write, and perform other motor ...

Aprosencephaly is a rare congenital disorder in which the forebrain of the embryo fails to develop properly. It is a type of cephalic disorder, which is a disorder of the head and brain. Symptoms of aprosencephaly include the absence of a forebrai...

Aprosencephaly cerebellar dysgenesis is a rare congenital disorder characterized by the absence of the forebrain and cerebellum. It is a severe form of brain malformation that is usually fatal. Symptoms may include seizures, developmental delays, ...

Aprosencephaly/atelencephaly spectrum is a group of rare congenital disorders that affect the development of the brain. It is characterized by the absence of a forebrain (the part of the brain responsible for higher functions such as thought, memo...

Aquagenic palmoplantar keratoderma is a rare skin condition characterized by the development of thick, scaly patches on the palms and soles of the feet after contact with water. It is thought to be caused by an abnormal response of the sweat gland...

General DiscussionArachnoiditis is a disease characterized by an acute inflammatory stage that occurs in the dura (exterior) and the arachnoid (interior), two of the three membranes that cover and protect the brain, the spinal cord and th...

Arachnodactyly-abnormal ossification-intellectual disability syndrome is a rare genetic disorder characterized by the presence of arachnodactyly (long, thin fingers and toes), abnormal ossification (abnormal bone formation), and intellectual disab...

Arachnodactyly-intellectual disability-dysmorphism syndrome is a rare genetic disorder characterized by the presence of spider-like fingers and toes (arachnodactyly), intellectual disability, and dysmorphic facial features. It is caused by a mutat...

An arachnoid cyst is a type of cyst that forms in the arachnoid membrane, which is one of the three layers of tissue that cover the brain and spinal cord. Arachnoid cysts are usually filled with cerebrospinal fluid (CSF) and can range in size from...

Arachnoid cysts are fluid-filled sacs that occur on the arachnoid membrane that covers the brain (intracranial) and the spinal cord (spinal). There are three membranes covering these parts of the central nervous system: the dura mater, arachnoid, ...

Arachnoid cysts are cerebrospinal fluid-filled sacs that form between the brain and the arachnoid membrane, one of the three membranes that cover the brain and spinal cord. They are usually benign and asymptomatic, but can cause neurological sympt...