Common allergens for allergic asthma. Allergens, which are small enough to be inhaled deep into the lungs, include: 1  Windblown pollen from trees, grasses and weeds. 2  Mould spores and mould fragments. 3  Animal fur, feathers, skin, saliva or urine.  House dust mite faeces.
http://www.webmd.boots.com/asthma/guide/allergic-asthma
Insect Sting Allergy. Stings from five insects - honeybees, hornets, wasps, yellow jackets and fire ants - are known to cause allergic reactions to the venom injected into the skin. Pet allergies can contribute to constant allergy symptoms, such as causing your eyes to water, or causing you to start sneezing.
http://acaai.org/allergies/types/skin-allergies/contact-dermatitis
The symptoms that result are an allergic reaction. The substances that cause allergic reactions are allergens. Allergens can get into your body many ways to cause an allergic reaction. You can inhale allergens into your nose and your lungs. Many are small enough to float through the air.
http://www.aafa.org/page/allergy-symptoms.aspx
Anaphylaxis (anna-fih-LACK-sis) is a severe allergic reaction that can be life-threatening and requires immediate medical attention. It happens fast and may cause death. Symptoms usually involve more than one part of the body, such as the skin or mouth, the lungs, the heart and the gut. Learn more about anaphylaxis.
http://www.aafa.org/page/allergy-symptoms.aspx
Contact dermatitis occurs when skin touches something that a person is sensitive or allergic to, such as poison ivy, perfume, or a cleaning product. The skin becomes red, itchy, or swollen. 1  Allergies.  Asthma.
http://acaai.org/allergies/types/skin-allergies/contact-dermatitis
Poison ivy, jewelry made of certain metals (especially nickel or gold) and sunscreen all can cause contact dermatitis — a skin condition that results from exposure to something to which you’re either sensitive or allergic. Other common irritants or allergens include:
http://acaai.org/allergies/types/skin-allergies/contact-dermatitis
Symptoms often include the following: redness, swelling, blistering, itching, hives and rashes. The allergen doesn’t have to be new to you. It can be something you’ve been using or eating for many years. Common skin allergies include allergic contact dermatitis, eczema, chronic urticaria and angioedema.
http://www.aafa.org/page/allergy-symptoms.aspx
1 Your skin can absorb allergens. Plants such as poison ivy, sumac and oak can cause reactions when touched. Latex, metals, and ingredients in beauty care and household products are other examples.  The severity of symptoms during an allergic reaction can vary widely.
http://www.aafa.org/page/allergy-symptoms.aspx
Contact dermatitis occurs when skin touches something that a person is sensitive or allergic to, such as poison ivy, perfume, or a cleaning product. The skin becomes red, itchy, or swollen. 1  Allergies. 2  Asthma.  Resources.
http://acaai.org/allergies/types/skin-allergies/contact-dermatitis
What is allergic asthma? Allergic asthma is the most common type of asthma. Asthma symptoms begin when the body reacts to something a person is allergic to, such as pollen, pet fur, feathers, mites or mould. Allergic asthma tends to run in families where there's a history of asthma or other allergies, such as hayfever.
http://www.webmd.boots.com/asthma/guide/allergic-asthma
skin symptoms from allergies and asthma
Redness, swelling, blistering, itching, hives, and rashes are the symptoms of skin from allergies and asthma. 