Difficulty in swallowing sometimes follows certain disease, such as polio, diphtheria, syphilis, or various forms of poisoning, alcoholism, and also hysteria and other mental disorders.
Tension headaches are similar to migraine in many respects, although the location of the headache may be somewhat different and the cause is more obvious.
Purpura is a bleeding disease in which the walls of the smaller blood vessels become dilated and thin then rapture, causing local hemorhage. Purpura is more common in women.
Diphtheria is a highly contagious disease caused by certain germs occasionally found in the throat of apparently normal people! These people are knows as "carriers" of the germs.