Diseases

Sebocystomatosis

A rare inherited disorder characterized by the presence of teeth at birth and the development of numerous skin cysts that may contain a thick substance called sebum. The cysts occur mainly on the chest, abdomen and front of neck.

Secernentea Infections

Infection with a type of parasitic nematode (worm). The symptoms are highly variable depending on where the worm migrates to through out the body and which particular species is involved. Some examples of nematodes are Wuchereria, Spirurina, Mansonella, Drucunculus, Loa and Ascaris.

Seckel syndrome 1

Seckel syndrome is a rare inherited disorder mainly involving retarded growth, mental retardation, small head and a facial appearance resembling a bird. It is often referred to as bird-headed dwarfism. There are three subtypes of the disorder. Additional variable symptoms may also occur.

Seckel syndrome 2

Seckel syndrome is a rare inherited disorder mainly involving retarded growth, mental retardation, small head and a facial appearance resembling a bird. It is often referred to as bird-headed dwarfism. There are three subtypes of the disorder. Type 2 tends to have less severe motor and mental retardation and the head is not small. Type 2 also involves at least one café au lait spot. Additional variable symptoms may also occur.

Secondary Hemophagocytic Lymphohistiocytosis

Secondary Hemophagocytic Lymphohistiocytosis (sHLH) is a severe, life-threatening syndrome of hyperinflammation triggered by an underlying medical condition, such as a severe infection, malignancy, or autoimmune disease. It occurs when the immune system is overactivated, leading to a “cytokine storm” and excessive activation of macrophages and lymphocytes that damage tissues and organs. Treatment involves controlling the immune response with immunosuppressants, corticosteroids, or chemotherapy, while also treating the underlying trigger.  

Secondary pulmonary hypertension

Increased blood pressure in blood vessels that carry deoxygenated blood from the heart to the lungs (pulmonary artery). The increased blood pressure is due to any of a number of diseases that restricts blood flow through the lung and hence builds pressure in the pulmonary artery leading to it.

Seemanova Lesny syndrome

A rare disorder characterized by spasticity, seizures, absent abdominal reflexes, small head and mental retardation.

Segawa syndrome- autosomal recessive

A very rare birth disorder characterized mainly by involuntary jerky movements that start during infancy. The disorder is caused by a genetic defect resulting in a deficiency of an enzyme called tyrosine hydroxylase. The disorder is usually treatable by administering low doses of L-DOPA medication.

Seghers syndrome

A very rare syndrome characterized mainly by spinal abnormalities and abnormal throat development where the throat opening at the back of the mouth is absent.

Selenium poisoning

Excessive exposure to selenium. Selenium is essential to the diet in small amounts but is toxic in large amounts. Poisoning can occur through inhalation or ingestion.

Selig Benacerraf Greene syndrome

A very rare disorder characterized mainly by kidney abnormalities, enlarged bladder due to an obstruction in the urethra and fused legs.

Seminoma

Seminoma is one type of testicular cancer[1] that is believed to originate from the germinal epithelium of the seminiferous tubules.

Semmerkrot Haraldsson Weenaes syndrome

A very rare syndrome characterized mainly by anemia, missing thumb, an immune disorder and an excessive buildup of fluid in the fetus or newborn (hydrops fetalis).

Sener syndrome

A very rare syndrome characterized mainly by an unusual facial appearance and an unusual condition where there a cystic spaces around blood vessels as they enter the brain.

Sengers Hamel Otten syndrome

A very rare syndrome characterized mainly by obesity, buildup of fluid inside the skull (hydrocephalus) and impaired sex hormone production.

Sengers Syndrome

Cataract cardiomyopathy characterized by congenital cataracts, hypertrophic cardiomyopathy, mitochondrial myopathy, and lactic acidosis. When patients perform submaximal prolonged exercise, they develp lactic acidemia. A bilateral and total cataract appears and progresses quickly in the first few weeks of life, requiring surgery. 

 

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Senior Loken Syndrome

A rare inherited disorder characterized by kidney dysfunction and progressive eye disease

Senior-Loken syndrome 4

A rare inherited disorder characterized by kidney dysfunction and progressive eye disease. Type 4 is caused by a chromosomal defect on chromosome 1p36.

Sennetsu Fever

A rare infectious disease caused by a bacteria called Ehrlichia sennetsu.

Sensorineural hearing loss

Sensorineural hearing loss (SNHL) is a type of hearing loss, or deafness, in which the root cause lies in the inner ear (cochlea and associated structures), vestibulocochlear nerve (cranial nerve VIII), or central auditory processing centers of the brain. SNHL accounts for about 90% of hearing loss reported. A hallmark of such hearing loss is that it is asymmetrically distributed usually toward the high frequency region, or may have a notch at some frequency. SNHL is generally permanent and can be mild, moderate, severe, profound, or total.