Dermatology - Allergic Phytodermatitis
Those who are allergic to plants can develop allergic phytodermatitis, which manifests as a linear pattern of sudden, extremely itchy, eczematous dermatitis. On the other hand, phytophotodermatitis is a type of photosensitivity reaction that can happen to anyone who gets a photosensitizing substance from plants on their skin and then goes outside. A few examples of plants that can cause allergic reactions in humans include poison ivy, poison oak, and poison sumac. Brazilian pepper, cashew, ginkgo, Indian marker, lacquer, mango, and rengas trees are among others. Pruritis can range from very mild to quite painful, and it is common to feel its effects long before any outward changes in the skin become noticeable. Allergens have been present in the body for some time due to previous exposure to plants or foodstuffs. Lesions The skin becomes red in spots with clear borders; these lesions are linear in shape and can develop into papules and edematous plaques that look like cellulitis. Particularly on the face and/or genitalia, these could be quite painful. Etchings, bullae, microvesiculation, and crusts could be visible. People with darker skin tones are more likely to get postinflammatory hyperpigmentation. History and skin examination results form the basis of a clinical diagnosis. Contact dermatitis (that isn't caused by plants), phytophotodermatitis, infections of soft tissues (cellulitis, erysipelas), atopic dermatitis, inflammatory dermatophytosis, early herpes zoster, and fixed medication eruption are all possibilities in the differential. Wet dressings may be useful for big lesions, and topical glucocorticoids alleviate itching. If pruritis is keeping the patient from sleeping or functioning, systemic glucocorticoids may be an option to consider. Tell patients to stay away from the allergen or to immediately wash any exposed areas with water and soap if they get it.
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