Hereditary diseases are also known as Inherited Diseases or Genetic Disorders. These are basically diseases that are occurred to a being because of it being passes over the generation due to defective genes.
There are many diseases that come over in a generation. It is not specific to particular generation; it travels down the line up to seventh generation too.
There are wide range of diseases that come under this category, following is list of few of them:
1. Hemophilia
2. Muscular dystrophy
3. Albinism
4. Turner syndrome
5. Galactosemia
And many more.
I hope this answer helps!😊