In order to prescribe ASIT, allergens to which a dog is hypersensitive need to be identified through allergy testing. Both intradermal and serum tests detect allergens. A positive allergy test indicates the presence of excessive amounts of IgE, and a positive result may be associated with clinical allergy or subclinical hypersensitivity. The significance of a positive result can only be ascertained once all other causes for the dermatitis have been ruled out. Also, a positive result should be for an allergen present in high quantities at the time of year that the individual patient has exacerbations of skin disease. Thus, the dermatologist will review patient history prior to selection of allergens for immunotherapy.
The first step in treating dermatitis is to identify and eliminate the cause. Most mild skin inflammation responds well to room temperature baths followed by application of fragrance-free moisturising lotions or over-the-counter hydrocortisone cream.
Seborrhoeic dermatitis may respond to anti-dandruff shampoo. These products may contain tar, salicylic acid , zinc pyrithione, ketoconazole , sulfur or selenium , any of which may be effective.
Once chemicals causing contact dermatitis are identified, treatment will be based on avoidance, symptom relief and other coping mechanisms.
To help clear the lesions of nummular dermatitis, applying a moisturising lotion and corticosteroid cream may be recommended.
If you suffer from stasis dermatitis, wearing support stockings and elevating your legs to reduce their swelling may be advised. Also, the underlying condition that is causing the leg swelling should be controlled. If an open ulcer gets infected, antibiotics may be needed.
To reduce inflammation and heal the irritation of most types of dermatitis, a doctor will usually recommend a prescription corticosteroid cream and may prescribe an oral antihistamine to relieve severe itching and an antibiotic if a secondary infection develops. Severe cases of dermatitis may call for corticosteroid tablets or, in rare cases, injections.