Final answer:
If the root cause cannot be removed, the symptoms are managed with treatments such as topical corticosteroid cream, and further diagnostic tests may be necessary if improvements are not seen. Anti-inflammatory steroid treatments are common for type III hypersensitivity reactions.
Step-by-step explanation:
When the root cause cannot be removed, clinical management of symptoms becomes the main focus. However, without knowing the specifics of the case, recommending topical steroids like hydrocortisone based on the information provided would only manage the symptoms temporarily. If the symptoms do not improve with topical corticosteroid cream, further diagnostic tests could be considered to seek out other potential causes and tailor the treatment accordingly.
In addition, if the symptoms suggest type III hypersensitivity reactions, anti-inflammatory steroid treatments are common, and for more severe cases, appropriate antibiotics or anti-inflammatory drugs might be prescribed.