Paper-thin parietal myocardium, usually but not always limited to right ventricle, presents as heart failure in infancy or early childhood.
In multiple sclerosis, sensitivity of symptoms to changes in body temperature or exercise (e.g., visual loss with exercise); initial description in 1890 of amblyopia following exercise.
Lateral knee injury resulting in anterior cruciate ligament (ACL) tear, medial collateral ligament (MCL) tear, and medial meniscal injury.
Compression dressing impregnated with medication for treating venous stasis ulcers; named after Paul Gerson Unna, German dermatologist 1850-1929.
For assessing vestibular function, having patient step in one spot with the eye closed: in peripheral lesions, body rotates to side of lesion whereas in central disorders, deviation is irregular.
Progressive myoclonus epilepsy (EPM1), onset at age 6-15, stimulus-sensitive myoclonus, tonic-clonic seizures, marked sensitivity to photic stimulation, leads to cerebellar ataxia and mental deterioration; from unstable expansion of a dodecamer minisatellite repeat unit in the promoter region of cystatin B, a widely expressed cysteine protease inhibitor; more common in Finland and western Mediterranean; also known as Baltic myoclonus.
Congenital thrombotic thrombocytopenic purpura (TTP); caused by an inherited deficiency in von Willebrand factor cleaving metalloprotease (ADAMTS13), characterized by the constellation of findings seen in TTP, namely microangiopathic hemolytic anemia, thrombocytopenia, neurologic symptoms, renal dysfunction, and fever.
Lipoid proteinosis with cutaneous and mucosal infiltrations of eyelids, tongue, larynx; associated with early hoarseness with an unusual skin eruption. Autosomal recessive, associated with mutation in ECM1 gene.
Type I, profound bilateral sensorineural congenital deafness with onset of loss of vision due to retinitis pigmentosa by age 10 (type 1B due to mutation in myosin-VIIa); type 2, moderate to severe congenital deafness with onset of retinitis pigmentosa by age 10; type III, retinitis pigmentosa first noted at puberty with progressive hearing loss; type IV, possible X-linked form.
For controlling bleeding from a tracheo-innominate fistula, digital pressure through the stoma on the back of the sternum to controls the fistula.
Eponyms 
Ingrown toenail
Nematocysts
Cryptitis
Vascular ring
Vesiculobullous rashes
Black hairy tongue
Abscess