Hey Guys, please can anyone help me with my Reflexology homework?

Its about contraindications and I know them but I need to explain why we can't treat them:

I got most of them its the following I need help with:

Low blood pressure
dysfunction of nervous system
skin disorders
severe bruising
medical oedema
conjunctivitis
cuts or abrasions
psychosis

Its the detail why we can't treat them and whether if we can its localised or general.

Hope you can help me pretty please.

Many thanks

Meg