Overview of condition and interaction pairings
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Last reviewed: 29/09/2025
Overview of condition and interaction pairings
Overview of condition and interaction pairings
To help you explore how different long-term conditions interact with one another, here is a list of all relevant condition pairings included in this resource.
Condition pairs:
- Diabetes and hypertension
- Diabetes and COPD
- Diabetes and IBD
- Diabetes and heart failure
- Diabetes and Parkinson’s Disease
- Hypertension and COPD
- Hypertension and IBD
- Hypertension and heart failure
- Hypertension and Parkinson’s Disease
- COPD and IBD
- COPD and heart failure
- COPD and Parkinson’s Disease
- IBD and heart failure
- IBD and Parkinson’s Disease
- Heart failure and Parkinson’s Disease
Diabetes and hypertension
Summary: Combined increase in risk for stroke, heart attack and retinopathy.
Clinical context: Increased sugar levels can cause damage to blood vessels in the heart, impacting cardiac output. This impact on cardiac output increases fluid retention and impacts how the heart functions. Additionally, having high sugar levels can increase risk of other problems associated with heart failure, such as hypertension, high cholesterol and insulin resistance.
It is also important to remember that thiazide diuretics, also referred to as ‘water tablets’, may be taken to reduce high blood pressure or to remove excess water from the body.
Side effects of taking thiazide diuretics include increased blood sugar levels and having low levels of salts, such as potassium, magnesium and sodium, in the body. Blood glucose levels may, but not always, return to normal if treatment with thiazide diuretics is stopped.
Key questions:
- What treatment is the patient on and is it appropriate for the patient's current condition(s)?
- Outside of pharmacological treatment, what other lifestyle factors need to be considered?
- What is the patient’s current BP readings and what is their individualised target?
- What are their symptoms of high BP?
- How do these conditions affect cardiovascular risk and does the patient need additional holistic support or lifestyle interventions?
Practice tips: Joint BP-glucose control; holistic education.
Resources: NICE guidelines for both conditions.
Diabetes and COPD
Summary: Steroid use can worsen glucose control; chronic inflammation increases systemic risks.
Clinical context: Often in periods of respiratory exacerbation (where acute treatment is required to support symptoms such as purulent sputum, increased cough, wheezing, shortness of breath, and so on), steroid therapy is needed to help reduce inflammation in the airways.
This can be either oral and/or intravenous steroids; however, steroids can cause insulin resistance, often resulting in deranged blood sugars and hyperglycaemia. This, therefore, can increase the risk of developing diabetes and, in those living with diabetes, negatively impact glycaemic control.
A common effect of diabetes is inflammation. People with COPD who are also diagnosed with diabetes are more likely to have impaired lung function, increased length of stay in hospitals and in-hospital mortality.
Key questions:
What treatment is the patient on for diabetes? Will this need to be reviewed if starting steroid therapy?
How does weight impact on breathing and blood sugars?
What are the main ways to prevent exacerbations?
How well is the patient educated on the signs and symptoms of exacerbation and the link between steroid use and diabetes?
Practice tips: Adjust diabetes medicines during flare-ups; encourage smoking cessation.
Resources: NICE COPD & Diabetes, Diabetes UK Factsheet.
Diabetes and IBD
Summary: Steroid use for IBD can worsen diabetes; inflammation increases cardiovascular risk.
Clinical context: Studies have shown a link between type 2 diabetes and IBD, in that having genetic susceptibility to type 2 diabetes increases the risk of IBD. It is important to remember that often steroid therapy is used in flare-ups for IBD.
Steroids can cause insulin resistance, resulting in deranged blood sugars and hyperglycaemia in those who already are living with diabetes. Additionally, frequent use of steroids due to the insulin resistance can increase the risk of developing diabetes.
Key questions:
- What treatment is the patient on for diabetes?
- Will this need to be reviewed if starting steroid therapy?
- If the patient is symptomatic with loose stools, do we need to think about how their medications are absorbed?
- Other than steroid therapy, how else can IBD flare-ups be treated?
- What are the mental health implications for someone living with both IBD and diabetes?
- How do these conditions affect cardiovascular risk, and does the patient need additional holistic support or lifestyle interventions?
Practice tips: Monitor sugars closely; reduce steroid reliance if possible.
Resources: NICE guidelines, NHS IBD.
Diabetes and heart failure
Summary: Hyperglycaemia impacts heart function; some diuretics affect glucose levels.
Clinical context: Increased sugar levels can cause damage to blood vessels in the heart, impacting on cardiac output. This impact on cardiac output increases fluid retention and impacts on how the heart functions.
Additionally having high sugar levels can increase the risk of other problems associated with heart failure such as hypertension, high cholesterol and insulin resistance. It is also important to remember that thiazide diuretics, also referred to as ‘water tablets’, may be taken to reduce high blood pressure or to remove excess water from the body.
Side effects of taking thiazide diuretics include increased blood sugar levels and having low levels of salts, such as potassium, magnesium and sodium, in the body. Blood glucose levels may, but not always, return to normal if treatment with thiazide diuretics is stopped.
Key questions:
- What treatments would be useful for both diabetes and heart failure (SGLT-2is)?
- How does weight impact symptoms for both conditions?
- What other factors can be optimised to improve quality of life?
- What future care needs should be considered?
Practice tips: Weight and fluid balance monitoring; optimise diabetes medicines.
Resources: NICE heart failure, Drug-Induced Diabetes Guidance
Diabetes and Parkinson’s Disease
Summary: Symptoms of hypo may be masked; high sugars may increase Parkinson’s Disease risk.
Clinical context: Studies have indicated that having higher-than-normal sugar levels, can increase the risk of developing Parkinson’s Disease.
It is important to remember that, due to the effects on movement and posture from Parkinson’s, patients who experience low blood sugar symptoms (hypoglycaemia) can sometimes be misinterpreted as being related to their Parkinson’s condition.
Therefore, it is important that in those living with both diabetes and Parkinson’s, any change in symptoms is monitored against their sugar levels accordingly.
Key questions:
Are there any treatments in diabetes that could be useful for those living with Parkinson’s?
How do you recognise signs of a low blood sugar in those living with Parkinson’s?
Is the patient at risk of hypoxia and how can we determine if any change in symptoms is related to either of their conditions?
Why are time critical medications so important in both conditions?
Practice tips: Monitor symptoms against glucose levels; strict medicine adherence.
Resources: NICE, Parkinson’s Disease UK.
Hypertension and COPD
Summary: Chronic inflammation and steroid use raise BP; atherosclerosis risk increased.
Clinical context: Due to inflammatory processes that cause COPD through tobacco smoking, it can increase the risk of hypertension. This is because atherosclerosis (build-up of fatty material in the arteries) can happen, narrowing blood vessels and increasing pressure.
It is also important to remember that often in COPD, oral and/or intravenous steroids are used to manage exacerbations (where acute treatment is required to support symptoms such as purulent sputum, increased cough, wheezing, shortness of breath and so on), which can develop insulin resistance, therefore increasing the risk of hypertension happening.
Key questions:
- What treatment is the patient on and is it optimised?
- What about the use of angiotensin-converting enzyme inhibitors (ACEi) or angiotensin II receptor blockers (ARBs) for blood pressure (BP) management—are these beneficial in COPD?
- Are there any other cardiac concerns or other causes for the hypertension?
- Outside of pharmacological treatment, what other lifestyle factors need to be considered?
- What are the current patient’s BP readings and what is their individualised target?
- What are their symptoms of high BP?
Practice tips: Consider ACE inhibitors; address lifestyle.
Resources: NICE Hypertension, COPD CKS
Hypertension and IBD
Summary: IBD inflammation may contribute to high BP; steroids exacerbate it.
Clinical context: Patients living with IBD are at increased risk of hypertension due to the systemic inflammation that is involved. This can increase the risk of developing atherosclerosis (build-up of fatty material in arteries), narrowing blood vessels and increasing pressure.
Additionally, systemic inflammation increases the risk of inflammatory events, which can be alleviated by anti-inflammatory treatment. Hypertension is an early and common manifestation of atherosclerosis and various cardiovascular events and therefore increases the risk for patients with IBD.
Key questions:
- What treatment is the patient on and is it optimised?
- What is the patient’s cardiovascular risk and do they have any cardiac history?
- Outside of pharmacological treatment, what other lifestyle factors need to be considered?
- What is the patient’s current BP readings and what is their individualised target?
- What are the symptoms of high blood pressure?
Practice tips: Monitor BP in flares; consider CV risk profile.
Resources: NICE Hypertension, NHS IBD Info.
Hypertension and heart failure
Summary: High BP leads to heart strain; managing BP prevents worsening heart failure.
Clinical context: It is important to remember that having hypertension itself is a risk factor for developing heart failure. This is because prolonged high pressure can damage the heart vessels and valves, cause increased workload on the heart and an enlarged heart.
It can also increase the risk of developing atherosclerosis (build-up of fatty material in arteries), narrowing blood vessels and increasing pressure. These complications increase the risk of cardiovascular events, such as a heart attack and stroke.
Key questions:
- What treatments would be beneficial for both hypertension and heart failure?
- Outside of pharmacological treatment, what other lifestyle factors need to be considered?
- What is the patient’s current BP readings and what is their individualised target?
- What are the risks of not treating hypertension and heart failure?
Practice tips: Educate on compliance; regular monitoring.
Resources: NICE heart failure and Hypertension
Hypertension and Parkinson's Disease
Summary: Parkinson’s Disease can cause low BP; BP control is a balance.
Clinical context: It is often common in patients with Parkinson’s that they may experience low blood pressure (hypotension), this is because Parkinson’s affects the autonomic nervous system, which controls blood pressure.
However, this can also increase the risk of having hypertension, which can also increase the risk of developing motor stages of the disease more quickly, therefore causing stiffness, tremors and rigidity.
Key questions:
- What treatment is the patient on and is this the best treatment for their symptoms?
- Outside of pharmacological treatment, what other lifestyle factors need to be considered?
- What are the current patient’s BP readings and what is their individualised target?
- What are the symptoms of high BP?
Practice tips: Monitor lying/standing BP; individualise targets.
Resources: NICE Hypertension, Parkinson’s Disease UK
COPD and IBD
Summary: Shared inflammatory pathways; smoking worsens both.
Clinical context: Due to shared inflammatory pathways, individuals with COPD may have an increased risk of developing IBD. Systemic inflammation associated with COPD can extend to the gastrointestinal tract, potentially triggering bowel inflammation and symptoms characteristic of IBD.
Additionally, tobacco smoking (a primary cause of COPD) can disrupt the gut microbiome, further contributing to gastrointestinal symptoms such as diarrhoea and abdominal pain, which are commonly associated with IBD.
Key questions:
- Has the patient been referred to smoking cessation services (if applicable)?
- Why does inflammatory processes increase the risk of developing IBD?
- What pharmacological and non-pharmacological treatments can support both conditions and reduce inflammatory processes?
Practice tips: Target inflammation holistically; MDT input.
Resources: NHS IBD, COPD CKS.
COPD and heart failure
Summary: Hypoxia strains heart; salbutamol affects BP and rhythm.
Clinical context: COPD can lead to low blood oxygen levels (hypoxia), which puts extra strain on the heart. This can then cause high blood pressure in the pulmonary arteries, the pressure then backflows into the right side of the heart, which can result in heart failure. This, combined with inflammation, can lead to damaged blood vessels, therefore increasing the risk of developing heart failure.
Key questions:
- What treatment is the patient on for both COPD and heart failure?
- What is their current BP measurement and is this within target range?
- How does smoking, weight and lifestyle impact on both conditions?
- How does salbutamol help both conditions?
Practice tips: Smoking cessation; consider pulmonary rehab.
Resources: NICE heart failure, COPD overview
COPD and Parkinson's Disease
Summary: Both affect breathing; shared inflammation risk.
Clinical context: Parkinson’s itself can increase shortness of breath symptoms of irregular and rapid breathing (respiratory dyskinesia). However, when this happens in someone living with both Parkinson’s and COPD, this can produce often heightened shortness of breath symptoms.
It is also important to remember that studies indicate that living with COPD can additionally increase the risk of developing Parkinson’s. This is due to chronic low oxygen levels and systemic inflammation impacting dopamine production.
Key questions:
- What treatment is the patient on for both COPD and Parkinson’s Disease?
- What breathing techniques have been explored?
- Does the patient require smoking cessation therapy (if applicable)?
- How does having both conditions impact on the patient’s activities of daily living?
Practice tips: Assess respiratory patterns; inhaler technique.
Resources: Parkinson’s Disease Foundation, COPD CKS
IBD and heart failure
Summary: Chronic inflammation increases heart failure risk; steroid use may complicate fluid balance.
Clinical context: Due to inflammatory pathways associated with both conditions, having IBD can increase the likelihood of developing heart failure. This can happen due to the chronic inflammation damaging heart valves and vessels.
IBD also increases the risk of developing atherosclerosis (build-up of fatty material in arteries), narrowing blood vessels and increasing pressure, therefore resulting in heart failure.
Key questions:
- How does inflammatory processes impact on different parts of the body?
- What medication is the patient taking to reduce inflammation?
- What pharmacological and non-pharmacological treatments can support both conditions and reduce inflammatory processes?
- Is the patient's treatment for IBD optimised to reduce risk of developing heart failure?
Practice tips: Monitor for weight gain/fluid overload; balance therapy.
Resources: NICE heart failure, NHS IBD
IBD and Parkinson’s Disease
Summary: Gut-brain axis suggests inflammatory links.
Clinical context: Due to ‘gut-brain-axis’ which identifies that the gut and brain communicate via microbiomes, having chronic intestinal inflammation can contribute to neurodegeneration and IBD. There is a possible genetic overlap between the conditions, therefore increasing the risk of development with chronic inflammatory processes.
Key questions:
- How does inflammatory processes impact on different parts of the body?
- What medication is the patient taking to reduce inflammation?
- What pharmacological and non-pharmacological treatments can support both conditions and reduce inflammatory processes?
- Is the patient's treatment for IBD optimised to reduce risk of developing Parkinson’s?
Practice tips: Encourage gut health; MDT approach.
Resources: Parkinson’s Disease UK, NHS IBD
Heart failure and Parkinson’s Disease
Summary: Parkinson’s Disease autonomic dysfunction affects cardiac output; some medicines worsen heart failure.
Clinical context: Parkinson’s can impact the autonomic nervous system, specifically nerves that impact on the cardiovascular system (cardiac dysautonomia).
This in turn can increase the risk of heart failure as cardiac output is affected and therefore fluid accumulates. Additionally, Parkinson’s medications (dopamine agonists) can increase the risk of heart failure directly.
Key questions:
- What medication for Parkinson’s disease is the patient taking that may increase the risk of heart failure?
- How can patients living with Parkinson’s disease prevent heart failure?
- How do we support the patient with both pharmacological and non-pharmacological treatments for their conditions?
Practice tips: Interdisciplinary care; symptom tracking.
Resources: NICE heart failure, Parkinson’s Disease UK.
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