Bronchial Challenge in the Diagnosis of Cannabis Allergy.

We have read with great interest the recent review published by Dr. Ebo and collaborators on cannabis allergy. It highlights the difficulties in getting a valid diagnosis because some patients do not admit its consumption, which may not be legalized, there are no commercial extracts and there are problems in cutaneous tests interpretation due to cross-reactivity with other related allergens.

Adverse Reactions to Illicit Drugs (Marijuana, Opioids, Cocaine) and Alcohol.

Drug allergy has been a research topic within the allergy field for decades. However, many drug reactions presumed to be of allergic nature are not and originate from different mechanisms. Drug-induced reactions can affect numerous organ systems, present with various symptoms, and have more than 1 mechanism of action.

Inhaled corticosteroids may have a protective effect against coronavirus infection.

Background: Spain has been severely affected by the COVID-19 epidemic, with 195,944 persons infected and 20,453 deaths at the time of writing. Older people with respiratory or cardiac conditions are most at risk.

Objective: The aim was to compare respiratory symptoms in nursing home residents and patients with uncontrolled asthma, who are considered vulnerable to COVID-19.

Allergic hypersensitivity to garlic and onion in children and adults.

Background: China and Spain are world leaders in the consumption of edible bulbs (garlic and onion), but there are few references to their capacity to cause allergic symptoms. The target was to study allergic sensitization and clinical symptoms associated with garlic and onion consumption in a large sample of allergic patients.

Methods: An observational cross-sectional study was conducted, testing garlic and onion extracts in 8109 patients of all ages seen by our allergy clinic in 2018.

Mastocytosis and the Fig Wasp (Blastophaga psenes).

Background: Mastocytosis involves the abnormal proliferation of mast cells and clinical variability. In the case of anaphylaxis, the triggering antigen, often associated with Hymenoptera allergens, must be identified. The common fig (Ficus carica) requires the fig wasp (Blastophaga psenes) for pollination.