What skin disease causes全身 itching and is also contagious?

There are various types of contagious skin diseases that cause generalized itching, including scabies, fungal infections, and tinea corporis. The details are as follows:

1. Scabies

Scabies is a contagious skin disease caused by mites. Symptoms include generalized itching, red papules on the skin, and small vesicles on the papules. Treatment may include topical medications such as sulfur ointment, salicylic acid ointment, or benzyl benzoate lotion, as directed by a physician. Additionally, antipruritic and antiallergic medications such as cetirizine hydrochloride tablets or setastine hydrochloride tablets may be taken under medical supervision.

2. Fungal Infection

Fungal infection is a skin condition caused by fungi, with symptoms including generalized itching, red patches on the skin, and scaling on the surface of the patches. Topical treatments such as naftifine-ketoconazole cream or miconazole nitrate cream may be used under medical guidance. Oral medications such as itraconazole capsules or terbinafine tablets may also be prescribed for treatment.

3. Tinea Corporis (Ringworm)

Tinea corporis is primarily caused by fungal infection and refers to a superficial fungal infection of the skin. It is contagious, and skin lesions typically present as erythematous plaques and papules. Patients may use topical antifungal creams under medical guidance, such as terbinafine hydrochloride cream or clotrimazole cream.

In addition, generalized itching can also result from jaundice due to liver disease. It should be noted that all the aforementioned skin conditions are contagious. If related symptoms occur, prompt medical consultation is necessary for appropriate examination and diagnosis to determine the underlying cause and initiate suitable treatment. Furthermore, maintaining good personal hygiene is essential to prevent transmission to others.