Itchy Skin
One of the primary symptoms of Penthaleus major allergy is itchy skin. This may occur if a person's skin comes into contact with this species of mite, resulting in intense itching and discomfort.
Redness and Swelling
The affected area tends to become red and swollen. This reaction is typically the result of the body's immune system responding to the proteins in the mite's saliva, feces or shedding skin.
Hives
Another common symptom is the appearance of hives. They look like raised, red welts on the skin and can cause severe itching. Hives could cover a large area or be localized to the contact area.
Difficulty Breathing
In severe cases, the allergy can cause difficulty breathing, similar to an asthma attack. This may occur if a person is highly allergic and inhales the particles.
Eczema Flare-up
This allergy can also cause an eczema flare-up, characterized by itchy, dry, flaky and inflamed skin. This happens because the body's immune system overreacts to the mite, leading to eczema in people who have this skin condition.
Watery or Itchy Eyes
In some cases, exposure can cause watery or itchy eyes. This symptom may be likened to hay fever and is caused by the body's allergic response to the mite.