Diseases

Pseudomyxoma peritonei

Pseudomyxoma peritonei is a very rare type of cancer that usually begins in your appendix as a small growth, called a polyp. Or, more rarely, it can start in other parts of the bowel, the ovary or bladder. This polyp eventually spreads through the wall of your appendix and spreads cancerous cells to the lining of the abdominal cavity (the peritoneum). These cancerous cells produce mucus, which collects in the abdomen as a jelly like fluid called mucin.

Pseudoneonatal adrenoleukodystrophy

Peroxisomal acyl-CoA oxidase deficiency is a disorder that causes deterioration of nervous system functions (neurodegeneration) beginning in infancy. Newborns with peroxisomal acyl-CoA oxidase deficiency have weak muscle tone (hypotonia) and seizures. They may have unusual facial features, including widely spaced eyes (hypertelorism), a low nasal bridge, and low-set ears. Extra fingers or toes (polydactyly) or an enlarged liver (hepatomegaly) also occur in some affected individuals.

Most babies with peroxisomal acyl-CoA oxidase deficiency learn to walk and begin speaking, but they experience a gradual loss of these skills (developmental regression), usually beginning between the ages of 1 and 3. As the condition gets worse, affected children develop exaggerated reflexes (hyperreflexia), increased muscle tone (hypertonia), more severe and recurrent seizures (epilepsy), and loss of vision and hearing. Most children with peroxisomal acyl-CoA oxidase deficiency do not survive past early childhood.

Pseudopolycythaemia

An acquired condition where the blood has the normal number of red blood cells but has a reduced plasma volume. It usually occurs in males with weight and blood pressure problems who smoke

Pseudoprogeria syndrome

A very rare syndrome characterized mainly by absent eyelashes and eyebrows as well a mental retardation .

Pseudotrisomy 13 syndrome

A very rare chromosomal disorder characterized mainly by abnormal forebrain development (holoprosencephaly), underdeveloped midface and extra fingers.

Pseudotumor cerebri

A condition marked by raised intracranial pressure and characterized clinically by HEADACHES; NAUSEA; PAPILLEDEMA, peripheral constriction of the visual fields, transient visual obscurations, and pulsatile TINNITUS. OBESITY is frequently associated with this condition, which primarily affects women between 20 and 44 years of age. Chronic PAPILLEDEMA may lead to optic nerve injury (see OPTIC NERVE DISEASES) and visual loss (see BLINDNESS). Source - Diseases Database

Pseudoxanthoma elasticum

A group of inherited, progressive connective tissue disorders affecting the skin, eyes and cardiovascular system. The condition is characterized by calcium deposits in the connective tissue which affects its ability to function. Some cases remain undiagnosed to the mildness of symptoms.

Pseudoxanthoma elasticum- forme fruste

An inherited systemic disease of connective tissue involving progressive calcification and degeneration of elastic fibers throughout the body, including the skin, eyes and cardiovascular system.

Psittacosis

Psittacosis is an infection caused by Chlamydia psittaci, a type of bacteria found in the droppings of birds. Birds spread the infection to humans.

Pterygium of the conjunctiva

A very rare disorder where an abnormal membrane of tissue grows from the conjunctiva of the eye. The membrane can cover a part of the eye and impair vision .

Pterygium syndrome antecubital

A very rare malformation characterized by a web of tissue that develops at the elbow and prevents the arm from extending fully.

Pterygium syndrome X-linked

A rare disorder involving skin, bone and muscle abnormalities with webbing in parts of the body such as the neck, elbows and back of legs.

Ptosis coloboma trigonocephaly

A very rare syndrome characterized mainly by droopy eyelids, coloboma and triogoncephaly as well as other variable features.

Ptosis strabismus diastasis

A rare genetic disorder characterized by drooping eyelids, hip problems, undescended testes and developmental delay.

Pulmonar arterioveinous aneurysm

A very rare disorder where there is an abnormal opening between a pulmonary artery and vein which can affect blood oxygenation.

Pulmonary Arterial Hypertension

Pulmonary arterial hypertension (PAH) is a rare, progressive disorder characterized by high blood pressure (hypertension) in the arteries of the lungs (pulmonary artery) for no apparent reason. The pulmonary arteries are the blood vessels that carry blood from the right side of the heart through the lungs.The exact cause of PAH is unknown and although treatable, there is no known cure for the disease. PAH usually affects women between the ages of 30-60.