Every person's experience is different, but the first year on a biologic tends to follow a similar path. Here is what to expect.

Key points

• • Biologics target specific parts of the immune system that drive psoriasis, and are usually given as injections under the skin.
  • To access one through the PBS, you generally need to have tried other treatments first and meet a severity threshold.
  • Many people notice improvement within weeks, with the full effect often reached around three to four months.
  • If one biologic does not work well enough, switching to another is common and often successful.

What is a biologic, and how is it different?

Psoriasis is driven by an overactive immune response that speeds up skin cell growth, causing thick, scaly plaques. Creams and many tablets calm inflammation broadly. Biologics are more targeted. Each one blocks a specific immune messenger involved in psoriasis, which is why they can be so effective for people whose skin has not responded to other options.

Biologics are prescribed by a dermatologist. Because they are expensive, PBS access usually requires that your psoriasis is severe and that you have already tried other treatments, such as light therapy or certain tablets, for a set period without enough improvement. Your dermatologist will document this for you.

What happens before the first injection?

Because biologics affect the immune system, you will usually have some screening first. This often includes blood tests and checks for infections such as tuberculosis and hepatitis B, which can become active again when the immune system is dampened.

It is also a good time to review your vaccinations. Some vaccines, called live vaccines, should be given before you start. Others, like the flu vaccine, are recommended once you are on treatment. Your dermatologist or GP can tell you which apply to you.

How quickly will I see results?

Many people start to notice their skin improving within the first few weeks. Most biologics begin with a loading dose, which means more frequent injections at the start to build up the medicine in your body. After that, injections are spaced out, anywhere from every week or two to every few months, depending on the medicine.

The full effect often takes around three to four months. At about this point, your dermatologist will formally assess your response. Under PBS rules, you need to show a good enough improvement to continue on that biologic.

What side effects should I look out for?

Most people tolerate biologics well. The most common side effects are redness, swelling or itching where you inject, and mild infections such as colds. Because your immune system is being dampened, infections can sometimes be more serious, so contact your doctor promptly if you have a fever or feel very unwell.

If you develop a significant infection or need surgery, your doctor may pause your biologic for a short time. Never stop or pause it without advice. Tell any new doctor or dentist that you are on a biologic.

What if it stops working?

Some people find a biologic works well for years. Others notice it becoming less effective over time, or it never quite reaches the result they hoped for. This is not a failure on your part, and it does not mean you have run out of options.

There are now several classes of biologic that target different parts of the immune system. Switching to a different one is common and often brings good results. Many people with psoriasis also have joint pain, and some biologics treat psoriatic arthritis too, so mention any stiff or swollen joints to your dermatologist.

How Ace can help

Biologics need to be kept between 2°C and 8°C and arrive on time for every dose. Ace delivers them in cold chain packaging, can walk you through your injection device before the first dose, and helps you plan ahead for travel so your treatment schedule stays on track. Get started with Ace.

References

healthdirect. Medicines for psoriasis.

healthdirect. Psoriasis.

Psoriasis Australia. Plaque psoriasis treatment.

Better Health Channel. Psoriasis.

This article is for general information only and does not constitute medical advice. Biologic treatment for psoriasis should be guided by your dermatologist.