has a cold

咳, 鼻づまり, 鼻水, 鼻汁

Post-nasal drip (PND) occurs when excessive mucus is produced by the sinuses. The excess mucus accumulates in the throat or back of the nose. It can be caused by rhinitis, sinusitis, or laryngopharyngeal acid reflux. 

咳, 咳はウェット, 眠れない, 鼻水

Acute viral nasopharyngitis, or acute coryza, usually known as the common cold, is a highly contagious, viral infectious disease of the upper respiratory system, primarily caused by picornaviruses or coronaviruses. 

吐き気, 発熱, 頭痛, 食欲不振

Influenza, commonly known as the flu, is an infectious disease of birds and mammals caused by an RNA virus of the family Orthomyxoviridae (the influenza viruses). In humans, common symptoms of influenza infection are fever, nausea, vomiting, sore throat, muscle pains, severe headache, coughing, and weakness and fatigue. 

咳, 発熱, 鼻水, malaise

Acute viral nasopharyngitis, often known as the common cold, is a mild viralinfectious disease of the upper respiratory system (nose and throat). Symptoms include sneezing, sniffling, runny nose, nasal congestion; scratchy, sore, or phlegmy throat; coughing; headache; and tiredness. 

下腹部痛, 胃の痛み, 食欲不振, u36;吐

のどの痛み, 口やのどに白い斑点, 嚥下困難, 首の痛み

Pharyngitis (far-in-jī' tis) is a painful inflammation of the pharynx, and is colloquially referred to as a sore throat. Infection of the tonsils, tonsillitis may occur simultaneously. ... 

呼吸困難, 咳, 発熱, 運動で息切れ

Pneumonia is an illness of the lungs and respiratory system in which the alveoli (microscopic air-filled sacs of the lung responsible for absorbing oxygen from the atmosphere) become inflamed and flooded with fluid. 

鼻づまり, 鼻水, 鼻汁

Seasonal allergic rhinitis, also called pollinosis, hay fever or nasal allergies, and often also written together as hayfever, is a collection of symptoms, predominantly in the nose and eyes, that occur after exposure to airborne particles of dust, dander, or the pollens of specific seasonal plants in people who are allergic to these substances. 

吐き気, 咳, 発熱, 耳痛

Otitis media is an inflammation of the middle ear segment of the ear. It is one of the two conditions that are commonly thought of as ear infections, the other being otitis externa. Otitis media is very common, and includes a whole range of medical conditions; all of which involve inflammation of the ear drum (tympanic membrane), and are usually associated with a buildup of fluid in the space behind the ear drum (middle ear space). 

咳, 頭痛, 鼻水, cough with yellow or green phlegm

Sinusitis is an inflammation of the paranasal sinuses, which may or may not be as a result of infection, from bacterial, fungal, viral, allergic or autoimmune issues. Newer classifications of sinusitis refer to it as rhinosinusitis, taking into account the thought that inflammation of the sinuses cannot occur without some inflammation of the nose as well (rhinitis).