1. Flue: headache, aching muscles, fever, cough, sneezing
2. Pneumonia: dry cough, high fever, chest pain, rapid breathing
3. Rheumatism: swollen, painful joints, stiffness, limited movement
4. Chickenpox: rash staring on body, slightly raised temperature
5. Mumps: swollen glands in front of ear, earache or pain on eating
6. An ulcer: burning pain in abdomen, pain or nausea after eating

1. I’ve got a cold/ a cough/ a sore throat/ a temperature (a higher temperature than normal)/ a stomach ache/ chest pains/ earache/ a pain in my side/ a rash on my chest/ spots/ a bruise on my leg (after playing football)/ a black eye (after being hit the eye)/ a lump on my arm/ indigestion (after eating too fast)/sickness and diarrhoea (an upset stomach which makes vomit and need to go to the toilet frequently)/sunburn/ painful joints (ankles, knees, wrists, shoulders)/ blisters (after wearing new, tight shoes)
2. I feel sick/ dizzy (head is spinning)/ breathless/ shivery (cold and hot)/ faint (light-headed)
3. I am depressed/ constipated (not able to go to the toilet)/ tried all the time
4. I’ve lost my appetite/ voice; I can’t sleep, my noise itches (I want to scratch it), my leg hurts.

(Source: English Vocabulary in Use, Cambridge University Press)