The longer an itch is scratched, the more most likely that self-trauma will cause deep-seated or secondary infections that can be hard to clear.
Fleas cause an insatiable itch as their saliva is extremely allergenic. Hair-loss, self-trauma, and secondary skin infection is extremely typical with infestation. Regular monthly topical products are readily available that kill and ward off fleas, flea eggs, and flea larvae.
Inhalant allergy (atopy) is the 2nd most typical reason for skin itchiness in dogs. It can be difficult to do away with, because the allergens are in the air we breathe. Atopy is a toughing and/or primary look into many skin ailments. It reacts to antihistamines and corticosteroids. Allergy testing and desensitization serum injections are suggested to lower the need for dental medicines which may have negative effects.
Sarcoptic mange (scabies) is a tiny mite that burrows under the skin triggering serious itchiness. It can be tough to detect on skin samples under the microscope; nonetheless, it makes its presence well known. Commonly, it is dealt with as a guideline out source for itching prior to pursuing other diagnostics. Dips and extra-label use of injectable de-wormers are used to kill scabies mites.
Ringworm isn't really a worm at all. It is a fungal infection of the skin. It triggers the hairs to break off and leaves a scaly red patch on the skin that might itch. Moderate cases could reply to topical anti-fungal lotions; whereas, generalized infection requires the use of oral antifungal drugs concurrently with medicated hair shampoos or dips. Alternatively, you could try a homemade dog shampoo, as they work just as well and are less expensive.
Yeast (Malassezia) infections of the skin are notoriously itchy. Hyperpigmented and thickened skin (elephant skin) is an usual appearance for dogs with Malassezia infections.