Stickler syndrome
Stickler syndrome is a genetic disorder characterized by a group of features that often manifest in affected individuals.
Stevens–Johnson Syndrome (SJS)
Stevens–Johnson Syndrome (SJS) is a life-threatening condition that typically emerges as a severe variant of erythema multiforme.
Silent sinus syndrome
Silent sinus syndrome is a rare but significant condition characterized by a spontaneous collapse of the maxillary sinus, leading to various clinical…
Sjögren syndrome (secondary Sjögren syndrome)
Secondary Sjögren syndrome (SS) is a complex autoimmune disorder that primarily affects moisture-producing glands, leading to symptoms such as dry ey…
Sicca syndrome (primary Sjögren syndrome)
Sicca syndrome, more commonly known as primary Sjögren syndrome, is a chronic autoimmune disorder characterized primarily by xerostomia (dry mouth) a…
Romberg syndrome (hemifacial atrophy)
Romberg syndrome, also known as hemifacial atrophy, is a rare and complex neurocutaneous condition characterized by progressive atrophy of the soft t…
Robin sequence
Robin Sequence, named after French physician Pierre Robin, is a complex condition often associated with several craniofacial anomalies.
Reyes syndrome
Reye's syndrome is a rare but serious condition that primarily affects children, leading to encephalopathy and fatty degeneration of the liver.
Reiter syndrome
Reiter's syndrome, also known as reactive arthritis, is a complex condition characterized by a triad of symptoms: arthritis, urethritis, and conj…
Ramsay Hunt syndrome
Ramsay Hunt Syndrome (RHS) is a rare neurological disorder that can lead to debilitating facial paralysis and other associated symptoms.
Pycnodysostosis
Pycnodysostosis is a rare genetic disorder that significantly affects physical development and skeletal structure.
Progeria
Progeria, scientifically known as Hutchinson-Gilford Progeria Syndrome (HGPS), is an incredibly rare genetic disorder that manifests in striking ways…
Peutz– Jeghers syndrome
Peutz–Jeghers syndrome (PJS) is an autosomal dominant genetic disorder characterized by distinct clinical features, including melanotic pigmentation …
Patterson– Brown– Kelly syndrome (Plummer– Vinson syndrome)
Patterson–Brown–Kelly syndrome, commonly referred to as Plummer–Vinson syndrome, is a rare disorder primarily affecting middle-aged women.
Papillon– Lefèvre syndrome
Papillon–Lefèvre syndrome (PLS) is a rare genetic disorder characterized by a combination of palmoplantar hyperkeratosis and juvenile periodontitis.