Hi Tanwoman,
When I did IHM and now, the consultation will include the usual details of personal info, lifestyle, diet, GP consent etc. For IHM I include any headaches, scalp infections, skin disorders, head\neck injury, sinuses, osteoporosis, undiagnosed lumps and always ask their stress levels as I find that stress will present in head, neck, shoulders and down arms. Perhaps you could include this on your form, as you would for any contra-indications for the feet.
I hope this helps.
Love & blessings,
Rachel