Interactions between different symptoms, conditions and medicines

The people we spoke to commonly pointed to confusion around whether the symptoms they experienced were the result of:

  • a particular health problem,
  • the side effects of a (perhaps new) medicine
  • some kind of interaction between a medicine and an existing health problem or
  • interactions between one medicine and another.

Some diseases had the ability to complicate things more than others e.g. epilepsy and diabetes. Pat described how her diabetes was made worse by other conditions and drugs, although she was unsure whether high blood pressure was a cause of her diabetes or a result of it. David was taken off a beta-blocker that he was prescribed in hospital because diabetes staff were concerned that it could shield the symptoms of a diabetic ‘hypo’ which could put his life at risk.

Pat isn’t sure whether high blood pressure causes her diabetes or vice versa. Diabetes complicates other conditions. Recent treatments and investigations have badly affected her diabetes.

Age at interview 80

Gender Female

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People with diabetes and epilepsy also frequently brought up issues of medicines having side effects or not seeming to work (see ‘Different views on prescribed medicines‘).

Some of the medicines that Ronald has been prescribed for his diabetes have made him feel really ill. He cannot take some treatments because of a pre-existing kidney condition.

Age at interview 70

Gender Male

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Anne Y says that her medicines make her feel irritable and bad tempered. Forgetfulness and other frustrations are attributed to her epilepsy rather than prescribed drugs.

Age at interview 61

Gender Female

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Fiona and Derrick described having learned how to tell between (perhaps similar) symptoms of different conditions or medicine effects. Fiona learnt how to distinguish between medicine effects and the symptoms of diabetes. Whilst Derrick was still not clear about which condition was causing shortness of breath, he had learned to control his symptoms using trial and error of the alternative treatments. He had also come to believe that he recognised the symptoms of his Chronic Obstructive Pulmonary Disease (COPD) as different to his asthma.

When Fiona was first diagnosed with epilepsy she confused the side effects of the medicines prescribed with symptoms of her diabetes. It is no longer an issue now that her body has got used to the medicines.

Age at interview 25

Gender Female

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It is not always clear to Derrick whether shortness of breath is caused by his heart or his lungs. He learns to control his condition using trial and error of the alternative treatments available to him.

Age at interview 61

Gender Male

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There are many ways in which medicines and conditions could interact with one another:

  • One condition might make another worse e.g. somebody with arthritis who finds it too difficult to exercise in order to manage a heart or lung problem
  • One condition could lead to another, as in diabetes contributing to cardio-vascular disease or high blood pressure leading to a heart attack or stroke.
  • Medicines might clash with each other, making one ineffective or producing side effects.
  • A treatment for one condition might make the symptoms of another worse or
  • Produce a new or previously hidden condition (such as ‘latent TB’ in Gog’s case).

Michael Y had been misdiagnosed due to existing problems, leading to prescription of a medicine that caused memory problems and an increased fear of falling over. Jean could not take a recommended treatment for a heart condition because of other health problems.

Mohammed says that multiple health problems bring complications of multiple medicines and professionals. He agrees with how the health service has prioritised his conditions but wonders about side effects.

Gender Male

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Angela was told she is at increased risk of stomach bleeds and infections due to clashes in her medicines. Repeated sickness absence eventually led to her losing her job.

Age at interview 46

Gender Female

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Jean describes a range of health problems. The risk of brain bleeds means that she cannot take the anticoagulants which would help with her heart condition.

Age at interview 80

Gender Female

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Cross medicine-condition issues seem to happen more often when each condition is treated separately due to their own ‘specialist model of care’. Nigel describes how his treatments are complicated by other ones and again stresses the complicating nature of diabetes when it comes to routine operations. For Nigel, GPs are best placed to provide an overall consideration of a patient’s management and wellbeing.

Nigel adjusts his insulin when other medicines are added. He is going in for a hernia operation which is complicated by diabetes and medicine taken to prevent stroke. His GP is seen as the best person to manage his care.

Age at interview 58

Gender Male

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For some people, the confusion, limitations and uncertainty around apparent cross medicine-condition issues led them to re-visit their ideas about what caused their health problems (see ‘Causes of health problems: certain and uncertain‘) in the first place. There were lots of examples where people could not have a treatment, or a recommended treatment, because it would interfere with an existing health problem or medicine already being taken.

One of Fred’s illnesses makes him vomit, which means he cannot take his diabetes medication. He wonders whether his conditions are related to diabetes.

Age at interview 85

Gender Male

Age at diagnosis 40

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Rosemary was told she could not have a particular treatment because it would raise her blood sugar. She turned down the treatment but feels anxious about the right course of action.

Age at interview 67

Gender Female

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Robert’s previous doctor told him that they cannot operate on his hip due to his other medical conditions. He puts up with a limp as a result.

Age at interview 80

Gender Male

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Continuity of care

Continuity of care describes the way in which different aspects of people's healthcare are joined up or follow on from each other. People with more...