I don't have it but I hate seeing people in pain. Here are some links:

Hair hurts (allodynia on scalp) Report for Patients Like You : PatientsLikeMe

My Hair Hurts! Migraine and Allodynia

Finally, I am vindicated! Don't touch me, I hurt! Allodynia...

Painful to Touch: Fibromyalgia & Tactile Allodynia

Hope that helps.