Hormones Cortisol And Corticosteroids

Overview

Cortisol is a hormone made by two small glands on top of your kidneys, called the adrenal glands. It helps control your response to stress, blood pressure, blood sugar, sleep, and how your body uses food. Corticosteroids are medicines that work like cortisol. They are used to calm inflammation and treat many conditions. They are not the same as anabolic steroids sometimes used for muscle building. This topic explains what cortisol does, what happens when levels are too high or too low, and how steroid medicines can affect you.

Problems with cortisol itself are uncommon, but corticosteroid medicines are widely used. Side effects are more likely with long courses or high-strength treatment.

Anyone can be affected. Corticosteroid medicines are used in children and adults for conditions such as asthma, arthritis, skin problems, and autoimmune diseases. Adrenal and pituitary problems can occur at any age.

Symptoms

Common symptoms

• Too much cortisol: weight gain around the belly or upper back, a round face, easy bruising, and purple stretch marks.
• Too much cortisol: muscle weakness, high blood pressure, high blood sugar, mood changes, and trouble sleeping.
• Too little cortisol: deep tiredness, weakness, dizziness when standing, nausea, poor appetite, and weight loss.
• Too little cortisol: salt craving, low blood pressure, and feeling very unwell during illness or stress.
• Steroid medicines: increased appetite, sleep problems, mood swings, fluid retention, easy bruising, and more infections.
• Some people have no clear symptoms at first, especially with mild hormone changes.

Symptoms in children

• Slower growth or shorter height than expected.
• Weight gain, round face, or behavior and mood changes.
• Delayed puberty, or feeling very tired and weak.
• More infections or slower recovery when taking steroid medicines.

Symptoms in older adults

• Muscle weakness, falls, and bone thinning or fractures.
• High blood sugar or high blood pressure that is new or harder to control.
• Confusion, low mood, or sleep problems.
• Dizziness on standing and dehydration during illness.

Causes

Main causes

• Cortisol naturally rises and falls during the day. It goes up briefly with stress, illness, or poor sleep.
• Too much cortisol can be caused by corticosteroid medicines or, less often, by a tumor in the adrenal or pituitary gland.
• Too little cortisol can happen when the adrenal glands are damaged, when the pituitary gland does not signal properly, or when steroid medicines are stopped suddenly.
• Corticosteroid medicines are prescribed for inflammation, allergies, asthma, arthritis, skin problems, and autoimmune conditions.

Risk factors

• Long-term or high-strength corticosteroid medicines, especially tablets or injections.
• Stopping steroid medicines suddenly instead of reducing them slowly with medical advice.
• Serious illness, infection, surgery, or injury, which puts extra stress on the body.
• Conditions affecting the adrenal or pituitary glands, or autoimmune conditions.
• Using more steroid medicine than prescribed, including creams or inhalers.

When to see a doctor

See a doctor urgently if:

• You feel very dizzy, very weak, or cannot keep fluids down.
• You have a fever or think you have an infection while taking steroid medicines.
• You have new eye pain, vision changes, or a severe headache.
• You have severe mood changes or thoughts of harming yourself. Get emergency help right away.
• You are vomiting or having diarrhea and are unsure what to do about your steroid medicine.

Book a routine appointment if:

• You have ongoing tiredness, weight change, easy bruising, or mood changes.
• Your blood pressure or blood sugar is higher than usual.
• You take a steroid medicine and have questions about side effects or how to reduce it safely.
• You are planning surgery, pregnancy, or travel and take steroid medicines.
• A child on steroid medicines seems to be growing more slowly than expected.

Diagnosis

Your clinician will ask about your symptoms, health history, and all medicines you take, including creams, inhalers, and injections. They will examine you and may arrange hormone tests and other checks. The aim is to find out whether cortisol is too high, too low, or whether a steroid medicine is causing side effects.

Tests that may be done

• Blood tests for cortisol, sometimes at specific times of day.
• Blood tests for other hormones, such as ACTH, a hormone that tells the adrenal glands to make cortisol.
• Urine or saliva tests to check cortisol over a day.
• Special response tests that check how your hormone system reacts.
• Scans of the adrenal or pituitary glands if a tumor is suspected.
• Checks of blood pressure, blood sugar, bone health, and eye health.

What to expect at your appointment

Tests may be repeated because hormone levels change. You may need to avoid some medicines or food before certain tests, and your clinician will tell you. Results can take days or longer. A single abnormal result does not always mean disease, so follow-up matters.

Treatment

Treatment depends on whether the problem is too much cortisol, too little cortisol, or side effects from steroid medicines. The goal is to bring hormone levels and symptoms into balance, treat the cause, and protect your long-term health. Always work with a qualified healthcare provider.

Self-care at home

• Never stop a steroid medicine suddenly. Follow your healthcare team's plan for reducing it slowly.
• Carry a steroid card or medical alert information if you take steroid medicines long term, and tell clinicians in an emergency.
• Ask your pharmacist or clinician what to do on sick days, before surgery, or during travel.
• Keep a list of all medicines, including creams, inhalers, and injections, and share it with your care team.
• Attend monitoring appointments for blood pressure, blood sugar, bones, and eyes.
• Get help early if you feel very unwell, because the body needs more cortisol during illness or stress.

Medical treatments

If a steroid medicine is causing problems, your clinician may slowly reduce it, change how it is given, or use other treatments for the underlying condition. If your body makes too little cortisol, you may need hormone replacement and a clear plan for illness or surgery. If your body makes too much cortisol, treatment focuses on the cause, such as surgery, specialist medicines, or radiation. People on long-term steroids need regular monitoring, and any changes must be made with medical supervision.

When is surgery considered?

Surgery may be needed if a tumor in the adrenal or pituitary gland is causing too much cortisol. If you take steroid medicines, tell your surgical team before any operation. Your treatment plan may need to be adjusted with medical supervision.

Living with this condition

Cortisol problems and steroid treatment can affect daily energy, sleep, mood, and appetite. A steady routine, clear medicine records, and a sick-day plan can make life safer and less worrying. Keep appointments and ask for help when symptoms change.

Lifestyle tips

• Keep regular sleep and wake times when possible.
• Manage stress with gentle activity, breathing exercises, or hobbies you enjoy.
• Avoid excess alcohol and smoking, which can add to heart and bone risks.
• Wash hands often and follow local advice to lower infection risk if your immune system is affected.
• Build a support network of family, friends, and your healthcare team.

Diet and exercise

Eat balanced meals with plenty of vegetables, protein, and calcium-rich foods. If you take long-term steroids, ask your clinician about bone health. Gentle weight-bearing exercise, such as walking, can help muscles and bones if it is safe for you. Your clinician can help you choose an activity level that suits your condition.

Mental health and emotional wellbeing

Steroid medicines and cortisol changes can cause mood swings, anxiety, depression, irritability, or sleep problems. These effects are real and not a sign of weakness. Tell your clinician early. If you have thoughts of harming yourself or others, call your local emergency number or a crisis support service in your country right away.

Prevention

Some causes of cortisol problems cannot be prevented. You can lower the risk of steroid-related problems by using the lowest effective amount for the shortest time needed, following the plan exactly, reducing slowly when advised, and attending monitoring appointments.

Vaccines

There is no vaccine that prevents cortisol problems. Keep up with routine vaccines as advised by your clinician. If you take steroid medicines, ask your healthcare team which vaccines are right for you and when.

Screening programmes

If you take long-term steroid medicines, your clinician may check blood pressure, blood sugar, bone health, growth in children, and eye health. These checks help catch problems early.

Complications

If left untreated

• Adrenal crisis: severe weakness, low blood pressure, shock, and danger to life.
• High blood sugar, high blood pressure, and heart problems.
• Bone thinning and fractures.
• More infections or slower healing.
• Mood changes, sleep problems, and difficulty concentrating.
• Growth problems in children.
• Eye problems such as cataracts or glaucoma.

Long-term outlook

Most cortisol problems and steroid side effects can be managed with good medical care. Many people live full lives with hormone replacement or with careful steroid treatment. Early advice and regular check-ups make a real difference, and it is always okay to ask for help.

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