If you think that explaining your medical problems to a doctor is difficult or embarrassing, just wait until you see these bizarre conditions people around the world have to deal with. Many of these conditions have doctors just as confused as the patients.
No, people who are afflicted with Xeroderma Pigmentosum don't crave blood (that's a completely different condition), but they are extremely sensitive to sunlight. Sufferers of this incurable condition can break out in painful blisters and sunburns within minutes of sun exposure.
Definitely not as glamorous as glittering, à la Twilight vampires.
If there's a human vampire syndrome, it only makes sense that there's also a human werewolf syndrome. Congenital hypertrichosis lanuginose causes excessive hair growth, either all over the body or just in specific areas.
Can you imagine smelling like a fish market ALL THE TIME? People with this metabolic disorder can't properly break down trimethylamine, an organic compound found in many proteins. This results in a distinctly fishy odor in their breath, sweat and urine.
Nevus of Ota may look frightening, but it doesn't actually affect the sufferer's vision. This eye disorder is caused by excessive melanin in and around the eyes. Laser treatments can reduce pigmentation problems in those with Nevus of Ota.