Certain oral contraceptives are prescribed specifically to help regulate the hormones that contribute to acne in some women. They're usually considered when a clear hormonal pattern is behind the breakouts. This option sits alongside, rather than replaces, typical topical treatments.

Omalizumab is a medicine given by injection for people whose chronic urticaria doesn't settle with antihistamines alone. It works by dialling down a part of the immune system involved in triggering hives. For many patients, it opens up a further option once standard tablets aren't doing enough.

Oscillating Vest means a machine that vibrates your chest wall at high speeds to loosen phlegm. This term describes an important change in the lungs or airways. Understanding it can help explain symptoms such as breathlessness, mucus build-up, or repeated infections. It also supports doctors in monitoring the condition and adjusting treatment.

Orthopnea means shortness of breath that happens specifically when you lie down flat. This term describes an important change in the lungs or airways. Understanding it can help explain symptoms such as breathlessness, mucus build-up, or repeated infections. It also supports doctors in monitoring the condition and adjusting treatment.

Oxygen Concentrator means a machine that "pulls" oxygen out of the room air to give to you. This term describes an important change in the lungs or airways. Understanding it can help explain symptoms such as breathlessness, mucus build-up, or repeated infections. It also supports doctors in monitoring the condition and adjusting treatment.