Angioedemahttps://en.wikipedia.org/wiki/Angioedema
Angioedema is swelling (or edema) of the deeper layer of skin or the mucous membranes. The swelling may occur on the face, tongue, and larynx. It is often associated with hives, which are swellings of the superficial skin.

The recent exposure to an allergen (e.g., peanuts) may be the cause of the urticaria, but in most cases the cause is unknown.

The skin of the face, especially around the mouth, and the mucosa of the mouth and/or throat, as well as the tongue, can swell within minutes to hours. The swelling may be itchy or painful. Urticaria may develop simultaneously.

In severe cases, airway stridor occurs, with gasping or wheezy inspiratory sounds and decreasing oxygen levels. Tracheal intubation is required in these situations to prevent respiratory arrest and death.

Treatment ― OTC Drugs
If you have trouble breathing, you should go to the emergency room quickly.

#Cetirizine [Zytec]
#LevoCetirizine [Xyzal]

Treatment
If symptoms are severe, epinephrine may be given subcutaneously or intramuscularly along with oral steroids.
#Epinephrine SC or IM
#Oral steroid or IV steroid
☆ AI Dermatology — Free Service
In the 2022 Stiftung Warentest results from Germany, consumer satisfaction with ModelDerm was only slightly lower than with paid telemedicine consultations.
  • Allergic angioedema. This child is unable to open his eyes due to the swelling.
  • Angioedema
  • Angioedema of half of the tongue. Because the edema can block the airway, if you cannot breath well, go to the hospital as soon as possible.
  • Angioedema of the face
References Angioedema 30860724 
NIH
Angioedema is non-pitting edema that involves subcutaneous and/or submucosal layers of tissue that affects the face, lips, neck, and extremities, oral cavity, larynx, and/or gut. It becomes life-threatening when it involves the larynx.
 Urticaria and Angioedema: an Update on Classification and Pathogenesis 28748365