The syndrome -- clinically known as seasonal affective disorder, more commonly as the winter blues -- affects as much as 20percentt of the population, according to studies.
There is no treatment or vaccine for dengue, which affects as many as fifty million people every year.
Experts estimate that pathological hoarding – or hoarding disorder – affects as many as 2 per cent of the British population.
Its most popular use may be for eczema, the skin condition that affects as many as one in five people.
Crohn's disease affects as many as seven hundred thousand Americans, but, like other autoimmune disorders, it remains poorly understood and is considered incurable.
Gout, an inflammation of the joints caused by a buildup of uric acid, affects as many as five million Americans, mostly men.
She said the main symptoms of post-polio syndrome, which affects as many as half of all survivors, are chronic fatigue, muscle atrophy and, sometimes, breathing problems.
Mounting paperwork demands and other time and productivity pressures can lead to physician burnout, which affects as many as one in three doctors, recent studies have shown.
It may seem hard to believe that a disorder first identified nearly 70 years ago that affects as many as 10percentt of women would still be unrecognized by many doctors and in most of those who have it.
Earlier, the agency's arthritis advisory committee agreed unanimously that the drug was an effective treatment for juvenile rheumatoid arthritis, which affects as many as 60,000 children in the United States.
Duchenne, which affects as many as 15,000 Americans, mainly boys and young men, is the most severe common form of muscular dystrophy, a disease made more prominent by years of Jerry Lewis telethons.
