Allergy

A stronger-than-necessary reaction of the immune system to a substance; it can appear as itching, redness or swelling. Be sure to tell your physician about any known allergies before a procedure.

Articles that mention this term

GuidesA Guide for First-Time Medical Aesthetic PatientsBefore your first medical aesthetic procedure: deciding, realistic expectations, choosing a physician, consent, aftercare and emotional readiness.Reviewed by the Medical Aesthetics Expert Board Safety CentreAfter Fillers: When Is It an Emergency? Vascular Occlusion and Other Warning SignsWhich symptoms after filler are normal and which are urgent? Signs of vascular occlusion, vision problems, infection and allergy; what to do first.Reviewed by the Medical Aesthetics Expert Board Treatment GuidesLaser Hair Removal: How It Works, Who It Suits and What to Watch ForHow hair reduction with laser and IPL works, why skin and hair colour matter, how many sessions are needed and what the risks are. A patient guide.Reviewed by the Medical Aesthetics Expert Board Treatment GuidesMesotherapy: What Is It, What Is It Used For, and What Does the Evidence Say?What mesotherapy is and how effective it is for skin and hair: the limits of the evidence, risks of unknown mixtures and possible side effects.Reviewed by the Medical Aesthetics Expert Board Treatment GuidesSkin Booster Injections: What Are They, and Who Are They For?What is a skin booster and how does it differ from filler? Hydrating injections, biostimulators, exosomes, polynucleotides: evidence, risks, expectations.Reviewed by the Medical Aesthetics Expert Board Start With a ConcernDark Circles Under the Eyes: Causes, When to See a Physician and What Can Be DoneWhy dark circles form and when they may signal illness; sun protection, creams, filler, laser and surgical options and their risks.Reviewed by the Medical Aesthetics Expert Board Safety CentreSide Effects after Botulinum Toxin: Drooping Eyelid, Asymmetry, Headache and What to DoSide effects after botulinum toxin: why drooping eyelids or brows, asymmetry and headache happen, how long they last, when to call 112. A patient guide.Reviewed by the Medical Aesthetics Expert Board Safety CentreFiller Complications: Swelling, Nodules, the Tyndall Effect, Late Reactions and Dissolving FillerFiller complications: swelling, nodules, bluish tint (Tyndall), infection, late reactions: how to recognise them and how filler is dissolved.Reviewed by the Medical Aesthetics Expert Board