There are many health issues and sensitivities that could impact on your e-cigarette use, so it’s important to learn about things like symptoms of allergic reactions to look out for. The most common issue with e-cigarettes is throat irritation from propylene glycol (PG – the primary component of most e-liquid) or even an allergy to it, but there are also additional concerns for those with some health conditions, who are pregnant or those taking specific medicines.
Humans come in contact with a large variety of substances and irritant or allergic (hypersensitivity) reactions may occur in predisposed individuals. Propylene glycol (PG) and its pyrolysis by-product formaldehyde are no exceptions. The majority of skin reactions to PG are irritant in nature, however, true allergic sensitization does also occur. In vapers who became sensitized, direct contact with PG may cause multiple small (1 – 2 mm) papules, pustules and vesicles around the mouth or in the oral mucosa with associated burning, stinging sensation in the affected areas. However, development of systemic symptoms after oral exposure to PG is rare. Common sense would suggest avoiding the offending agent (i.e.PG) and switching to products containing only vegetable glycerin.
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