"The extreme emaciation and those characteristic lesions are diagnostic," he explained.

The characteristic lesions caused by the different pathogens also differ.

In typhoid fever they become the seat of ulcers which are regarded as the characteristic organic lesion of that disease.

A small number of gastric glands exhibited characteristic lympho-epithelial lesions.

The characteristic lesions are believed to result from a single nematode migrating within the subretinal space.

The characteristic lesions are the ischemic skin lesions (usually with areas of skin necrosis).

These increase in size and become crusted over, so that the characteristic lesion can only be seen around the edge of the scab.

The characteristic lesions may be multiple, superficial mucosal erosions similar to erosive gastroduodenitis.

The different conditions mean that many conditions which produce characteristic lesions on the skin produce only non specific lesions in the mouth.

Avoiding touching characteristic lesions on other people.