Detailed answer

Skin rashes can be caused by various factors. Allergies, such as to certain foods, medications, or environmental triggers like pollen or pet dander, can lead to rashes. Contact with irritants like harsh chemicals, soaps, or fabrics can also cause skin irritation and rashes. Infections, such as fungal, bacterial, or viral infections, can manifest as rashes as well. Additionally, underlying medical conditions like eczema, psoriasis, or autoimmune diseases can result in chronic or recurrent rashes. It's important to identify the specific cause of a skin rash to determine the appropriate treatment and prevention methods.