The development of an itchy rash on the hands and feet can have a variety of causes that usually require examination by a doctor in order to obtain an accurate diagnosis. Contact dermatitis and allergic dermatitis are among the most common causes of this symptom. Dyshidrotic eczema and psoriasis are other potential causes of this type of rash. Any specific questions or concerns about an individual itchy rash on the hands and feet should be discussed with a doctor or other medical professional.

Contact dermatitis is a leading cause of an itchy rash on the hands and feet. This skin condition causes inflammation, itching, and swelling when the skin comes into contact with certain environmental substances. The triggers can differ from person to person but often include soaps, fragrances, and household cleaning supplies. Treatment for contact dermatitis usually consists of moist compresses and over-the-counter anti-itch medications. As triggers are identified, they should be avoided as much as possible.

Allergic dermatitis is similar in many ways to contact dermatitis, although the symptoms are often more severe. This potential cause of an itchy rash on the hands and feet is most common among those who also suffer from nasal allergies such as hay fever. The symptoms associated with this form of dermatitis may not always respond to topical ointments or moist compresses and often require the use of prescription medications. The best treatment option for allergic dermatitis is prevention by avoiding any known triggers.

Another potential contributing factor to an itchy rash on the hands and feet may be dyshidrotic eczema. This skin condition causes intensely itchy blisters to develop on the palms of the hands or the soles of the feet. These blisters may later crack and ooze before becoming dry and scaly. Excess moisture, such as caused by intense sweating or frequent hand washing, may cause this condition to become worse. Treatment for this condition can be difficult and generally requires trial and error and regular supervision by a doctor.

Psoriasis is a type of skin condition that may sometimes cause an itchy rash on the hands and feet. Thick, scaly red patches develop on the skin of those with psoriasis, sometimes causing significant pain or discomfort. Symptoms of psoriasis may come and go with no warning over the course of many years. Treatment may involve the use of over-the-counter and prescription medications as well as phototherapy or laser treatments.