Spots that look like freckles on a person's inner thighs or stomach is one typical symptom of systemic mastocytosis, according to the American Academy of Allergy, Asthma and Immunology. Other symptoms include low blood p... More » Health Pain & Symptoms

Malignant systemic mastocytosis is a rare form of mastocytosis that affects the entire body, according to It is a subgroup of mast cell neoplasms and is often very difficult to diagnose, according to PubMed. More » Health Conditions & Diseases

Mastocytosis is a disorder caused by an excess of mast cells in the body. There are two types of mastocytosis, according to the National Institute of Allergy and Infectious Diseases: systemic mastocytosis, caused by mast... More » Health Conditions & Diseases

Post-nasal drip, coughing, fever, nasal stuffiness and discolored nasal charge are symptoms of severe nasal congestion, claims the American College of Allergy, Asthma and Immunology. Severe sinus congestion is known as c... More » Health Pain & Symptoms

Symptoms of allergy headaches include any headache accompanied by itching, sneezing and a runny nose, which is symptomatic of hay fever or seasonal allergies, according to the American Academy of Allergy, Asthma & Immuno... More »

Food allergies, infections, plants, medicines and insect bites can lead to an allergic reaction and hives, in which there is the formation of itchy skin welts, notes the American College of Allergy, Asthma & Immunology. ... More »

Treat bloody sinus discharge caused by sinusitis with nasal decongestant sprays to shrink swollen nasal passages, antihistamines to block inflammation and topical nasal corticosteroids to clear the sinus openings and nas... More »