Times Colonist

Change in weather triggers headaches

- DR. KEITH ROACH Your Good Health

Dear Dr. Roach: My older daughter has had headaches most of her life. When she was young, she thought it was normal.

Severe migraines started around 1995. Many doctors later, they came up with diagnosis of a Chiari malformati­on. She was on oxycodone, but now she is off addictive painkiller­s. She suffers for several days when there is a change in the weather. When she gets the headaches, she usually stays in her bedroom and wears sunglasses when she has to take the dogs out. The last one, a few days ago, lasted about three days.

What options does she have to relieve these debilitati­ng headaches?

Anon. Chiari malformati­ons are congenital (she was born with it) abnormalit­ies of the base of the brain, including the brainstem and cerebellum. They are more prevalent than previously believed, and with more people getting MRI scans, it is thought to be present in 0.1 per cent to 0.5 per cent of people. There are three classic types of Chiari malformati­ons, but the most likely in your daughter’s case is Chiari malformati­on Type I, as the other two are rarer and are diagnosed at an early age. CM-1 normally is diagnosed in adolescenc­e or young adulthood.

The symptoms of CM-1 are variable. Some people have no symptoms, but neck pain, headache and damage to various nerves are common.

It sounds to me as though her headaches remain a significan­t burden on her quality of life. I cannot say whether the Chiari malformati­on is causing the headaches. Worsening of headache with coughing or sneezing tends to support the CM as the cause. A neurosurge­on with experience in treating Chiari malformati­ons would be worth consulting, and repeat imaging may be necessary, as the condition can worsen or, rarely, improve over time.

If surgery isn’t appropriat­e, I would recommend a pain-management specialist to help with the headaches. Given her history, opiate drugs are a bad choice. There are many different kinds of options.

I found much informatio­n about the disease and support groups at asap.org. Dear Dr. Roach: I have blisters on my body that are filled with yellow fluid. I have been to a skin doctor and even had bloodwork. The doctor recommende­d that I take prednisone. I was hoping you could recommend a different medication. The doctor’s report said I have bullous pemphigoid.

R.M. Bullous pemphigoid is an autoimmune disease, where the body is attacked by its own immune system. It occurs most commonly in older adults. Symptoms often start with an itchy rash that may be indistingu­ishable from either eczema or hives. Most people will then develop large (one to three centimetre­s, sometimes over an inch), tense blisters. These can be severely itchy.

Without treatment, the disease slowly progresses over years, greatly affecting quality of life and can be life-threatenin­g if the disease attacks the mouth and throat. However, prednisone is a rapidly effective and inexpensiv­e drug, commonly used as a firstline treatment for people with severe or extensive disease. Some experts use high-potency steroid creams; however, these can be very expensive and hard to use over large areas of the body.

I want to gently remind readers that my primary goal is to educate people about both common and rare diseases. I don’t act as a physician to readers: I can’t, in absence of a thorough history, physical exam and review of the laboratory data.

Dr. Roach regrets that he is unable to answer individual letters, but will incorporat­e them in the column whenever possible. Readers may email questions to ToYourGood­Health @med.cornell.edu

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