Thank you for the answers.

I have found a doctor that says she knows what CRPS is but I haven't had the chance to test her knowledge yet really. She is difficult to get appointments with and a month wait is not apparently unusual.

She thinks the lump on my head is a cyst caused by a hair not coming through as it should and thinks it will get smaller in time, leave as is.

The yawning she doesn't know the answer to and she has given me quinine tablets to see it that helps, we will see.

John.