<human>: Hi, I have an uncomfortable sensation in my right forearm. It feels somewhat like fiberglass irritation although I have had no exposure to fiberglass.  This started some months ago, and was only felt when my bare skin was resting on my desk or table. Now the sensation is more frequent and more intensified.  Pressure of any kind or from clothing touching my forearm will aggravate the sensation.  Any ideas?
<bot>: Hello! Welcome to Chat Doctor ! Irritation in forearm may occur either due to- 1. Brachioradiales Pruritic: Brachioradiales pruritic can make you feel itchy, tingling or stinging or a changed sensation on the skin of either or both armor forearm. Brachioradiales pruritic develops due to damage to nerves in the cervical spine (neck). This may be caused by: a) Cervical spine tumors b) Cervical rib c) Compression of the nerves d) Cervical vertebral osteoarthritis e) Other spinal cord conditions.  Continuous pressure on the spinal neurons conveying itch impulses can activate sensitization processes. When nerves transmitting light touch and pinprick sensations are over-stimulated, the patient may develop sensitive or sore skin, with intense responses to touch and pain (conditions known respectively as paresthesia and hyperplasia). Brachioradiales pruritic will typically affect one particular area of the skin (a dermatome), but may spread to other regions. The condition is more common in sunnier climates, as prolonged exposure to sunlight may harm nerve fibers in the skin. Brachioradiales pruritic is usually diagnosed by taking a biopsy of a small piece of skin. This is then examined under a microscope, and doctors may see reduced skin tissue (skin atrophy) and damaged nerves. 2. Other Causes: a) Eczema-is a long-term non-infectious condition resulting in itchy inflamed skin, which gets worse at night. Eczema can develop anywhere, but is most frequent behind the knees and on the arms. It appears as red, Chat Doctor.  b) Lichen plans -is a chronic non-infectious inflammatory skin ailment. Patients usually get itchy forearms and inner wrists. There may be groups of lesions that are purple-colored, flat, have defined borders, and are covered with white lines, known as Wickham striae. The skin may look shiny and become scaly. c) Contact dermatitis-is a common skin condition caused by contact with irritants or allergens. It appears as an itchy rash, and you may also experience blisters, red bumps, thick scaly skin, and soreness in the affected region. d) Ringworm infection-appears as a circular itchy rash that is inflamed and reddened at the borders and normal skin-colored in the center. The rash is usually raised, and you may experience sores and blisters. Ringworm infection is very contagious. Hives is a common non-infectious condition with a welt-like rash, which may be extensive. The rash is red or pink, with raised itchy spots, and can last anything from a day up to 6 weeks. The itching can be intense, and occasionally patients experience burning or stinging. e) Certain 