My child, a 3-year-old 9-month-old boy, has become weak in physique since he was 2 years and 6 months old, frequently suffering from colds. After a coughing attack in December last year, he was diagnosed with bronchial asthma. He has had two episodes of bronchial pneumonia since early 2005, both following colds. Some doctors say he has asthma, while others say it cannot be confirmed yet because symptoms were only observed twice in December last year and May this year (with wheezing sounds in the lungs and a hoarse voice in the throat, but no significant shortness of breath. The first episode was more severe, requiring symptomatic anti-inflammatory medication such as Yanbijing, Qiangde Song, and Aminophylline for 10 days before recovery. The second episode was slightly milder but accompanied by pneumonia, treated with Penicillin. He is pale, thin, has poor appetite, is picky about food, and has low immunity, making him prone to illness.
My child has started showing wheezing symptoms since last year, but the doctor has not diagnosed it as asthma. This year, there have been three attacks, respectively in early August and on the 20th, and after each attack, aminophylline can alleviate the symptoms. Is this indicative of asthma in my child, and how should it be treated?