Diseases

Pierre Robin syndrome skeletal dysplasia polydactyly

Pierre Robin syndrome skeletal dysplasia polydactyly: A rare disorder characterized by the Pierre-Robin sequence (underdeveloped jaw, cleft soft palate and abnormal tongue location), extra fingers and skeletal abnormalities.

Pierre Robin’s sequence

Pierre Robin syndrome is a condition present at birth in which an infant has a very small lower jaw, a tongue that tends to fall back and downward, and a soft cleft palate. The syndrome is also called Pierre Robin complex or sequence.

Pierson syndrome

Pierson syndrome: A very rare syndrome characterized mainly by a small pupil and kidney disease at birth.

Pigment-dispersion syndrome

Pigment dispersion syndrome (PDS) is an affliction of the eye that, if left untreated, can lead to a form of glaucoma known as pigmentary glaucoma. It takes place when pigment cells slough off from the back of the iris and float around in the aqueous humor. This is not what causes problems; however, if the pigment flakes clog the trabecular meshwork, preventing the liquids in the eye from draining, pressure can build up inside the eye. This pressure can cause permanent damage to the optic nerve. This condition is rare, but occurs most often in Caucasians, particularly men, and the age of onset is relatively low: mid 20s to 40s. Most sufferers are nearsighted. There is no cure as of yet, but PDS can be managed with eye drops or treated with simple surgeries. If caught early and treated, chances of glaucoma are greatly reduced. Sufferers are often advised not to engage in high-impact sports such as long-distance running or martial arts, as strong impacts can cause more pigment cells to slough off.

Pigmentary retinopathy

Pigmentary retinopathy: An inherited eye disorder involving degeneration of the retina.

Pigmented purpuric eruption

Pigmented purpuric eruption (medical condition): A disorder involving blood capillary inflammation associated with excess pigmentation.

Pigmented villonodular synovitis

Pigmented villonodular synovitis (PVNS) is a joint problem that usually affects the hip or knee. It can also occur in the shoulder, ankle, elbow, hand or foot. When you have PVNS, the lining of a joint becomes swollen and grows. This growth harms the bone around the joint. The lining also makes extra fluid that can cause swelling and make movement very painful.

Pili annulati

Pili annulati: A rare hair disorder where some or all of the hair shafts have alternating light and dark bands of color along the hair shaft.

Pili torti

Pili torti - developmental delay - neurological abnormalities: A very rare syndrome characterized mainly by developmental delay, twisted hair shafts and neurological symptoms.

Pili torti onychodysplasia

Pili torti - onychodysplasia: A very rare syndrome characterized mainly by abnormal nails and fragile twisted hair shafts.

Pillay syndrome

Pillay syndrome: A rare inherited disorder characterized by corneal clouding an abnormalities of the jaw and arm bones.

Pilomatrixoma

Pilomatrixoma is a slow-growing, hard mass found beneath the skin. It is most common on the face and neck, but is sometimes found on the scalp, eyelids, and arms. Pilomatrixoma is usually a single lump, but, occasionally, multiple masses are seen. Most cases of pilomatrixoma occur in children under the age of 10, and the condition is twice as common in females as males. Other names for pilomatrixoma include pilomatricoma and calcifying epithelioma of Malherbe.

Pilotto syndrome

Pilotto syndrome: A very rare syndrome characterized mainly by congenital heart disease, cleft lip and palate, scoliosis, short stature and mental retardation.

Pineal Teratoma

Pineal Teratoma: A type of brain tumor that occurs mainly in the pineal region of the brain.

Pinealoma

Pinealoma: A slow-growing type of brain tumor that occurs in the pineal gland. The pineal gland produces a hormone called melatonin which is involved in regulating sleep patterns.

Pineoblastoma- adult

Pineoblastoma, adult: A rare type of highly malignant brain tumor that usually occurs in children. The tumor develops in the pineal region of the brain.

Pinta

Pinta is a human skin disease endemic to Mexico, Central America, and South America. It is caused by infection with a spirochete, Treponema pallidum carateum, which is morphologically and serologically indistinguishable from the organism that causes syphilis

Piriformis syndrome

Piriformis syndrome is a neuromuscular disorder that occurs when the sciatic nerve is compressed or otherwise irritated by the piriformis muscle causing pain, tingling and numbness in the buttocks and along the sciatic nerve. There is no definitive way to diagnose the syndrome which may result from anatomical variations in the muscle-nerve relationship, or from overuse or strain. Uncontrolled studies have suggested theories about the disorder. However, a large scale formal prospective outcome trial using Class A study design as outlined by the American College of Physicians, found the weight of the evidence-based medicine is that piriformis syndrome should be considered as a possible diagnosis when sciatica occurs without a clear spinal cause

Pitt Rogers Danks syndrome

Pitt-Rogers-Danks syndrome: A rare genetic condition characterized by reduced fetal growth, mental retardation and distinctive facial features

Pitt-Hopkins syndrome (18q21 deletion syndrome)

Pitt-Hopkins syndrome is a condition characterized by intellectual disability and developmental delay which range from moderate to severe, breathing problems, recurrent seizures (epilepsy), and distinctive facial features.

Pituitary dwarfism 1

Dwarfism (pronounced dwo[ʀ]fiz'm IPA: /ˈdwɔːˌfɪzɪm/) is a medical term describing a person of short stature, with the most widely accepted definition of a dwarf being a person with an adult height of less than 4 feet 10 inches (147cm). Dwarfism can be caused by over 200 separate medical conditions, and as such the symptoms of individual dwarfs can vary greatly. People who are affected by dwarfism are often referred to as "little people."

Pituitary tumors- adult

Pituitary tumors form in the pituitary gland (a pea-sized organ in the center of the brain above the back of the nose). The pituitary gland makes hormones that affect other glands and many body functions, especially growth. Most pituitary tumors are benign (not cancer).

Pityriasis lichenoides chronica

Pityriasis lichenoides chronica (also known as "Chronic guttate parapsoriasis," "Chronic pityriasis lichenoides," "Dermatitis psoriasiformis nodularis," "Parapsoriasis chronica," and "Parapsoriasis lichenoides chronica") is an uncommon, idiopathic, acquired dermatosis, characterized by evolving groups of erythematous, scaly papules that may persist for months

Pityriasis lichenoides et varioliformis acuta

Pityriasis lichenoides et varioliformis acuta (also known as "Acute guttate parapsoriasis," "Acute parapsoriasis," "Acute pityriasis lichenoides," "Mucha-Habermann disease," "Parapsoriasis acuta," "Parapsoriasis lichenoides et varioliformis acuta," and "Parapsoriasis varioliformis"[1]:456 ) is a disease of the immune system. It is the more severe version of Pityriasis lichenoides chronica. The disease is characterized by rashes and small lesions on the skin. The disease is most common in males and usually occurs in childhood, although it has been seen in every age group and every race. It is possible for the disease to go into remission for short periods of time or forever