Clinical significance
- Urticaria pigmentosa, also known as cutaneous mastocytosis, is a rare skin disorder characterised by the presence of raised, brownish or reddish-brown lesions on the skin. These lesions, known as maculopapular mastocytosis, are caused by an excessive accumulation of mast cells in the skin. Here’s a more detailed description of urticaria pigmentosa
- Appearance: Urticaria pigmentosa is typically characterised by brownish or reddish-brown lesions on the skin. These lesions can vary in size and may resemble hives (urticaria), thus the name “urticaria pigmentosa.”
- Texture: The lesions can be flat or slightly raised and often have a rough, pebbly texture. When rubbed or scratched, they may become itchy and occasionally cause hives or wheals to form in the affected area.
- Distribution: These lesions can appear anywhere on the body but are more commonly found on the trunk, arms, and legs.
- Symptoms: Itching is a common symptom associated with urticaria pigmentosa. Scratching or rubbing the affected areas can lead to redness and further irritation.
