The common causes of ringworm-like things on the back of the hand include tinea cruris, psoriasis, pityriasis rosea and so on.
1. ringworm:this disease is caused by dermatophyte infection, common causative organisms include Trichophyton rubrum, Trichophyton mustelii, plaster-like microsporidium and flocculent epidermidis, etc. The lesions are mainly on the hands, which are manifested as pimples, blisters, erythema, scales, and keratinization accompanied by itching and other symptoms.
2. Psoriasis: the cause of this disease is unknown, can be caused by cellular immunity, genetic factors, environmental factors, infections and other factors, can occur in the hands, manifested as erythema, scales, dry skin, nails thickening and roughness, depression and other symptoms.
3. pityriasis rosea: the cause of this disease is unknown, may be related to herpes virus infection, immune dysfunction, drug factors, bacterial infections, allergies and other factors, lesions manifested as rose-colored reddish spots, oval or annular, clear boundaries, covered with fine chaff-like scales and other symptoms.
It is recommended that patients go to regular hospitals, clear diagnosis, timely treatment under the guidance of the doctor, to avoid delaying the condition.