I have had recurring autonomic nervous system malfunctions. My blood pressure has dropped to 80/40. Tough to stand up like that. My problems are due to upper neck injuries.

Her problem could be a result of head/neck movements while shampooing her hair or such. I have to be careful with head/neck position, especially shaving my face or toweling my hair dry.

She may have a neck problem that was made worse by her concussion impact. very few doctors consider that if the head is impacted, the neck is impacted too. Some generic chiropractors can help, some very good Physical Therapist can too. There is a sub specialty in chiro called Upper Cervical Chiropractic. www.NUCCA.org is one web site.

She may have inflammation that impact blood flow. This is worth getting checked out. She does not need any more head impacts.

Does she play soccer? Heading a soccer ball is rough on the neck and brain. This may be a contributing cause. She should NEVER head a soccer ball again.

Hope this helps.

My best to you two.