You can buy some topical corticosteroids "over-the-counter" without a prescription. For example, for dermatitis, you can buy the steroid cream called hydrocortisone 1% from your pharmacy. Do not apply this to your face unless your doctor has told you to do so. This is because it may trigger a skin condition affecting the face ( acne or rosacea. ) Long-term use may also damage the skin. On your face this would be more noticeable than the rest of your body. So usually only weak steroids are used on the face. Those which are suitable are prescription-only.
There is daily as well as seasonal fluctuation in pollen and mould counts in the air. Most weather shows broadcast the counts. Make it a point to listen to these reports, and avoid outings on particularly bad days. As a rule, pollen counts are high during the mornings and subside by afternoon. Plan your day accordingly. If you need to go outside when there is a high pollen count, ensure you take medication to help your allergies and wear sunglasses to prevent pollen getting in your eyes. Remember, a pollen count of over 50 may worsen hay fever symptoms.
The main difference between the injection and the tablet form is that once you've had the injection, there's nothing that anyone can do to stop the steroids leaking into your blood stream. If you do suffer any side effects, these may last for up to three weeks. If you're taking tablets, stopping the treatment will usually cause the symptoms to cease within twenty-four hours. In a nutshell - the injection is faster and more convenient than the tablets, but if you're unlucky enough to suffer side effects, you'll be stuck with them for longer.