Hormonal acne is linked to shifts in hormone levels and tends to cluster along the jawline and chin, often flaring around the menstrual cycle. It doesn't just affect teenagers — plenty of adults deal with it too. Treatments for this type sometimes focus specifically on addressing the underlying hormonal pattern.

A hive flare is a stretch of time when urticaria symptoms suddenly ramp up, with more or larger wheals appearing than usual. Stress, an infection, heat, or certain foods can set one off, though often there's no clear reason at all. Recognising a flare early helps patients know when it's worth adjusting their treatment.

Histamine release is the process by which skin cells suddenly discharge histamine and related chemicals, producing the redness, swelling, and itch typical of a hive. It's the central biological event behind most urticaria symptoms. Many urticaria medicines work specifically by interrupting this process or blocking its effects.

Histamine release is the process by which skin cells suddenly discharge histamine and related chemicals, producing the redness, swelling, and itch typical of a hive. It's the central biological event behind most urticaria symptoms. Many urticaria medicines work specifically by interrupting this process or blocking its effects.

HRCT Scan is a special type of imaging test. It means high-resolution ct; the specific "gold standard" imaging used to see airway widening. This scan gives doctors a very detailed picture of the lungs and airways. It helps confirm a diagnosis, shows how severe the condition is, and allows doctors to plan the most appropriate treatment.

Hemoptysis means coughing up blood; it can be "streaking" in mucus or "frank" (pure) blood. 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.

Halitosis means chronic bad breath caused by bacteria sitting in trapped mucus. 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.

Huff Coughing means a "forced breath" technique used to move mucus without the strain of a hard cough. 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.

Hypertonic Saline means a strong saltwater mist you inhale to draw water into the mucus so it’s easier to cough. 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.

Hyperinflation means when the lungs stay partially inflated because air is "trapped" inside. 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.