Face spring allergies with dense bumps may be hives, eczema, contact dermatitis and other causes. 1. hives: the disease is due to contact with allergens caused by allergic diseases, spring air usually appear pollen, willow, insect mites and other allergens, which led to the face of the edematous masses, presenting the state of dense pimples. 2. Eczema: this disease is caused by contact with allergens caused by allergic diseases, eczema occurs in the spring, manifested as erythema, papules, papules, etc., which can be accompanied by intense itching, while scratching lesions aggravated, the face can appear dense pimples. 3. Contact dermatitis: this disease is also due to contact with allergens caused by allergic diseases, common allergens such as cosmetics, hair dyes and so on. The disease is often manifested as erythema on the basis of papules, papules, etc., the face will appear dense pimples, blisters rupture, the skin surface has ooze, vesicles or crusts. Patients with dense bumps on the face, should go to the hospital in time for examination, to clarify the cause of the disease and active treatment.