Image: Illustrative medicine forms. The appropriate corticosteroid and route depend on the condition and individual treatment plan. AI-generated editorial image; not a recommended combination.
A prescription for steroids can raise understandable questions. Will they cause weight gain? Are they the same drugs used for bodybuilding? Why prescribe a medicine with so many possible side effects?
The answer depends on the particular medicine, the condition being treated and how it is used. Corticosteroids can control troublesome inflammation, protect organs and, in some situations, save lives. Their risks deserve careful attention, but they should be weighed against the risks of leaving an illness untreated.
What are steroid medicines?
The steroids discussed here are corticosteroids, particularly glucocorticoids. Examples include prednisolone, hydrocortisone, dexamethasone and inhaled budesonide. They are different from anabolic-androgenic steroids, which are associated with muscle building and act more like testosterone. NHS: Steroids
Corticosteroids mimic hormones your body makes naturally. One important hormone is cortisol, produced by the adrenal glands above the kidneys. Cortisol helps regulate metabolism, blood sugar, blood pressure, inflammation and the response to physical stress. It is essential for normal body function. NIDDK: Adrenal hormones
How do they work?
At anti-inflammatory treatment levels, these medicines reduce inflammation and dampen immune activity. This can ease swelling and help when the immune system is damaging the body’s own tissues. The same immune-suppressing effect can also make infections more likely. NHS: Steroids
There is another important use: hormone replacement. In adrenal insufficiency, including Addison’s disease, the body cannot make enough cortisol. Prescribed corticosteroids replace what is missing. This is different from using higher anti-inflammatory amounts to control another illness. NIDDK: Treatment
When do doctors use them?
Examples include:
- Asthma: inhaled steroids help prevent symptoms and attacks. Systemic steroids may be needed during significant flare-ups.
- Autoimmune and inflammatory diseases: conditions such as rheumatoid arthritis, lupus, Crohn’s disease and ulcerative colitis may need steroids to control active inflammation.
- Organ transplantation: steroids may form part of treatment to reduce rejection.
- Allergic and skin conditions: nasal sprays can treat allergic rhinitis, while creams or ointments can treat eczema and other selected inflammatory skin conditions.
- Eye inflammation: prescription steroid drops may be used for uveitis or inflammation following surgery.
- Painful inflamed joints: a clinician may inject a steroid into or around the affected area.
- Adrenal insufficiency: hormone replacement is essential; an adrenal crisis requires immediate emergency treatment with corticosteroids and fluids.
Treatment choices vary by diagnosis. Sources: NHS: Prednisolone, NHS: Inhalers, NHS: Skin treatment, NHS: Eye drops, NHS: Joint injections, NIDDK: Treatment.
Does the form of steroid matter?
Yes. Systemic treatment, such as many oral tablets and intravenous (IV) medicines, affects the body widely. Inhaled, nasal, skin, eye and joint treatments target particular areas and often reduce whole-body exposure. However, local treatment is not automatically risk-free.
Risk depends on the medicine’s potency, dose, duration, route, repeated courses and individual susceptibility. Using several steroid products together also matters. Even non-oral treatments can sometimes suppress normal cortisol production, particularly with substantial exposure or interacting medicines. Tell your clinician about every steroid you use, including creams and inhalers. Endocrine Society: Adrenal suppression guidance
What side effects can occur?
During short courses, some people experience difficulty sleeping, increased appetite, indigestion, irritability or other mood changes. Blood sugar and blood pressure may rise. Serious reactions can occur even early in treatment, although not everyone develops side effects. NHS: Prednisolone and NHS: Steroids
With longer or greater exposure, concerns include infections, osteoporosis and fractures, high blood sugar or diabetes, high blood pressure, cataracts, glaucoma and changes in body fat distribution. Some people develop muscle weakness. Growth can be affected in children. Monitoring should match the person’s treatment and risks. NHS: Steroids and NHS: Prednisolone
Local treatments have their own effects:
- Inhaled steroids can cause oral thrush or a hoarse voice. Rinsing the mouth after use and using a compatible spacer when advised can help.
- Skin steroids can cause thinning, stretch marks or colour changes. Stronger products, prolonged use and treatment over large areas require particular care.
- Eye drops can raise eye pressure or contribute to cataracts, especially with longer use. Follow the eye clinician’s monitoring plan.
- Joint injections can cause temporary pain or swelling. Some medicine can enter the bloodstream, so repeat injections can also have systemic effects.
Sources: NHS: Inhaler side effects, NHS: Skin steroids, NHS: Eye drops and NHS: Injection side effects.
Why can they still be necessary?
An inflamed airway, an autoimmune flare or inadequate cortisol production can be more dangerous than the medicine’s potential harms. Inhaled treatment can reduce asthma attacks; replacement treatment sustains people with adrenal insufficiency; emergency corticosteroids can be lifesaving in an adrenal crisis. NHS: Inhalers and NIDDK: Adrenal insufficiency
The decision is individual. Ask what improvement is expected, when treatment will be reviewed, whether a more targeted treatment is suitable, and which checks or protective treatments you need. The goal is enough treatment to control the illness while limiting avoidable harm.
Never change or stop treatment on your own
Steroids can suppress the body’s cortisol production. Do not abruptly stop prescribed long-term, repeated or high-dose systemic treatment without your clinician’s instructions. A gradual reduction, called tapering, may be needed. Some short courses do not require tapering, so follow the specific stopping plan rather than inventing one. Endocrine Society: Guidance
Ask whether you need a steroid emergency card and written instructions for illness, surgery, missed doses or vomiting. If your clinician provides a sick-day plan, follow that plan. Do not improvise extra doses or automatically double treatment. NHS: Prednisolone and NIDDK: Treatment
When to seek urgent help
Seek urgent medical advice for signs of significant infection, such as fever, chills or feeling very unwell, or severe mood or behaviour changes, including hallucinations. Get emergency help for severe breathing difficulty, collapse or immediate danger to yourself or others. NHS: Injection safety
Possible adrenal crisis is an emergency. In someone with adrenal insufficiency or steroid-related adrenal suppression, severe weakness, persistent vomiting, severe abdominal pain, confusion, fainting or collapse need immediate assessment, especially after missed or stopped treatment or during illness. If vomiting prevents you keeping essential steroid medicine down, seek immediate medical care. Follow any prescribed emergency injection plan while help is being arranged. NIDDK: Warning signs and NIDDK: Treatment
Takeaway: Steroid medicines can be highly effective and sometimes essential. Understanding the reason for treatment, the likely risks and the follow-up plan is safer than either dismissing side effects or avoiding necessary treatment out of fear.
This article provides general education, not a diagnosis or an individual treatment plan. Ask your doctor or pharmacist about your own medicine.
Sources and further reading
- NHS: Steroid medicines
- NHS: Prednisolone tablets and liquid
- NHS: Beclometasone inhaler side effects
- NHS: Hydrocortisone for skin
- NHS: Dexamethasone eye drops
- NHS: Hydrocortisone injection side effects
- NIDDK: Adrenal insufficiency facts and warning signs
- NIDDK: Adrenal insufficiency treatment
- European Society of Endocrinology and Endocrine Society: Glucocorticoid-induced adrenal insufficiency guideline
#Steroids #Corticosteroids #MedicationSafety #PatientEducation #Inflammation #AdrenalHealth #ConditionsAndTreatment
