Steroids, also known as corticosteroids, are a type of anti-inflammatory medicine used to treat a wide range of conditions. They are different from anabolic steroids, which are often used illegally by some people to increase their muscle mass. Steroids come in many different forms, including tablets, liquids, inhalers, nasal sprays, injections, creams, lotions, and gels. Some of the conditions that steroids can be used to treat include:

• Asthma and chronic obstructive pulmonary disease (COPD)
• Hay fever
• Severe hives
• Eczema
• Painful joints or muscles, such as arthritis, tennis elbow, and frozen shoulder
• Pain caused by an irritated or trapped nerve, such as severe sciatica
• Inflammatory bowel disease, such as Crohns disease
• Lupus
• Multiple sclerosis (MS)

Steroids work by reducing redness and swelling (inflammation) . They are a man-made version of hormones normally produced by the adrenal glands, which are two small glands found above the kidneys. Steroids reduce inflammation and affect the immune system. They wont cure your condition, but theyre very good at reducing inflammation and will ease symptoms such as swelling, pain, and stiffness. Steroids can have side effects, including weakened bones and cataracts, so they are usually taken for as short a time as possible. Its important to keep an eye on your weight while taking steroids because they can cause you to put on weight or have an increased appetite. Steroids can also weaken bones, which can lead to a condition known as osteoporosis.