Itchy all over with red spots after taking cephalosporin due to allergy

Generalized itching and red spots after taking cephalosporins may be related to factors such as drug allergy, eczema, or urticaria. Appropriate medical treatment should be followed to promote recovery. Specific analyses are as follows:

1. Drug Allergic Reaction

If an individual is allergic to cephalosporins or has an allergic constitution, taking the medication may cause tissue damage and physiological dysfunction, leading to allergic reactions such as body itching and red spots. Treatment should follow a doctor's guidance using medications like cetirizine hydrochloride tablets, loratadine tablets, or chlorpheniramine maleate tablets.

2. Eczema

Eczema is a common inflammatory, itchy skin condition in clinical practice. If present during cephalosporin use, it may lead to abnormal immune function and impaired skin barrier, resulting in generalized itching accompanied by dense red spots. Treatment should follow medical advice with topical agents such as tacrolimus ointment, pimecrolimus cream, or mometasone furoate cream.

3. Urticaria

Urticaria is a type of allergic hypersensitivity reaction that releases inflammatory mediators, causing blood vessel dilation and increased vascular permeability, which leads to body itching and small red spots. This may also occur after taking cephalosporins. Treatment should follow a doctor’s instructions using medications such as fexofenadine hydrochloride tablets, loratadine tablets, or ebastine tablets.

In addition to the above causes, similar symptoms may also result from allergic dermatitis, tinea corporis, chickenpox, or other conditions. When discomfort occurs, prompt medical evaluation is necessary to determine the underlying cause and receive appropriate treatment to alleviate symptoms.