Symptoms worsen to include memory loss and dementia and even difficulty with moving the arms and legs.

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For some people, this procedure may be painful or it may worsen symptoms.

CNN: Interstitial cystitis

The researchers note that stopping donepezil can cause withdrawal (which can temporarily worsen symptoms), so the drug should be gradually tapered down before going off it completely.

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So anything that disrupts sleep is very likely to worsen symptoms, leading eventually to the types of rapid changes in mood that are known as "rapid cycling" and that represent such an ominous sign for the long-term prognosis of bipolar disorder.

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What, if anything, appears to worsen your symptoms?

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Symptoms often include headaches that worsen over time, hearing loss, changes in vision and memory loss.

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Small increases in body temperature can trigger or worsen multiple sclerosis symptoms.

CNN: Multiple sclerosis

But farmers say vaccinated animals can still carry the virus and pass it on, without showing any symptoms - so jabs could worsen the outbreak in the long run.

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His doctors said the symptoms were aggravated by his back pain, and aren't expected to worsen or to affect his conducting.

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