100 most uncommon medical conditions known to humankind.

This is the list of the rarest medical conditions known to humankind. What is the most uncommon disease? Have you ever wandered? Hutchinson-Gilford Progeria Syndrome – click to find out more. Fibrodysplasia Ossificans Progressiva Alien Hand Syndrome Jumping Frenchmen of Maine Alice in Wonderland Syndrome Stone Man Syndrome (Fibrodysplasia Ossificans Progressiva) Cotard Delusion (Walking Corpse Syndrome) Polydactyly (Extra Fingers or Toes) Xeroderma Pigmentosum Morgellons Disease Capgras Syndrome Tetra-Amelia Syndrome Paraneoplastic Pemphigus Harlequin Ichthyosis Hyper IgM Syndrome Geographic Tongue Foreign Accent Syndrome Epidermodysplasia Verruciformis (Tree Man Syndrome) Werewolf Syndrome (Hypertrichosis) Aquagenic Urticaria (Water Allergy) Pantothenate Kinase-Associated Neurodegeneration (PKAN) Kleine-Levin Syndrome (Sleeping Beauty Syndrome) Elephantiasis Ondine’s Curse (Congenital Central Hypoventilation Syndrome) Lesch-Nyhan Syndrome Trimethylaminuria (Fish Odor Syndrome) Stiff Person Syndrome Progeria Exploding Head Syndrome Jumping Frenchmen of Maine Geographic Tongue Foreign Accent Syndrome Stone Man Syndrome (Fibrodysplasia Ossificans Progressiva) Cotard Delusion (Walking Corpse Syndrome) Polydactyly (Extra Fingers or Toes) Xeroderma Pigmentosum Morgellons Disease Capgras Syndrome Tetra-Amelia Syndrome Paraneoplastic Pemphigus Harlequin Ichthyosis Hyper IgM Syndrome Fish Odor Syndrome (Trimethylaminuria) Hypertrichosis (Werewolf Syndrome) Jumping Frenchmen of Maine Exploding Head Syndrome Alien Hand Syndrome Progeria Polydactyly (Extra Fingers or Toes) Ondine’s Curse (Congenital Central Hypoventilation Syndrome) Lesch-Nyhan Syndrome Hutchinson-Gilford Progeria Syndrome Aquagenic Urticaria (Water Allergy) Stone Man Syndrome (Fibrodysplasia Ossificans Progressiva) Cotard Delusion (Walking Corpse Syndrome) Pantothenate Kinase-Associated Neurodegeneration (PKAN) Geographic Tongue Foreign Accent Syndrome Epidermodysplasia Verruciformis (Tree Man Syndrome) Kleine-Levin Syndrome (Sleeping Beauty Syndrome) Elephantiasis Morgellons Disease Harlequin Ichthyosis Hutchinson-Gilford Progeria Syndrome Trimethylaminuria (Fish Odor Syndrome) Stiff Person Syndrome Paraneoplastic Pemphigus Jumping Frenchmen of Maine Exploding Head Syndrome Alien Hand Syndrome Tetra-Amelia Syndrome Stone Man Syndrome (Fibrodysplasia Ossificans Progressiva) Progeria Hyper IgM Syndrome Fish Odor Syndrome (Trimethylaminuria) Hypertrichosis (Werewolf Syndrome) Geographic Tongue Xeroderma Pigmentosum Morgellons Disease Kleine-Levin Syndrome (Sleeping Beauty Syndrome) Stiff Person Syndrome Cotard Delusion (Walking Corpse Syndrome) Lesch-Nyhan Syndrome Ondine’s Curse (Congenital Central Hypoventilation Syndrome) Foreign Accent Syndrome Epidermodysplasia Verruciformis (Tree Man Syndrome) Hutchinson-Gilford Progeria Syndrome Alien Hand Syndrome Polydactyly (Extra Fingers or Toes) Capgras Syndrome Aquagenic Urticaria (Water Allergy) Jumping Frenchmen of Maine Exploding Head Syndrome Pantothenate Kinase-Associated Neurodegeneration (PKAN) Harlequin Ichthyosis Elephantiasis Trimethylaminuria (Fish Odor Syndrome) Progeria Stone Man Syndrome (Fibrodysplasia Ossificans Progressiva) Cotard Delusion (Walking Corpse Syndrome) Disclaimer: This information is general in nature and does not replace professional medical advice. If you have symptoms or concerns, please see your doctor.