Fever and headache are most times the outward signals of some other specific cause. It can be a common cold or something that may be of very serious nature and needing some serious investigation and treatment.
However our own body has its immune mechanism and there are many occasions body will mend itself without any need of medicines.But for that we should allow the body proper time and rest so that it can concentrate on that issue. That is why there is a popular saying ' With medicine cold gets cured in one week, without medicine it goes in seven days'.
However body needs support and strengthening so that situation does not deteriorate and the cause factor is faced to lessen its effect and remove it altogether. For the viral diseases, the body needs some time to develop immunity and defence,and recovery. The medicines given when the cause is a virus attack, are of supportive nature to prepare the body for its own defence and also to prevent any other gems,bacteria or virus attack.
In most general cases the medicines given are 'symptomatic'. So when fever is there one medicine at lest will be anti-pyretic or reducing temperature. The medicine ingredient induces the body to sweat more and thereby reducing body temperature by perspiration(evaporation) cooling. If headache is there then the symptomatic medicine is a basic pain reliever.
However an experienced doctor also diagnoses the cause by a simple physical examination of the patient and the symptoms narrated by him. So along with the symptomatic medicines he may also give the curative ones like antibiotic etc.
The first attempt taken by a doctor is to put the patient to comfort. Detailed investigation is possible then if needed. Usually for (otherwise) normal healthy peoples, two or three doses or a couple of days symptomatic medicines with proper rest and certain precautionary measures may be sufficient enough to bring back the patient to normalcy.
When one experiences headache alone, the best immediate action is to apply the commonly available headache balms or liniments ( roll-on types also),on forehead,tie that portion mildly with a handkerchief and take rest for sometime closing eyes. If the headache is caused by warm weather, washing face , forehead and neck with cod water may bring help.
If one feels the headache is more than bearable, it is better to take the commonly available headache tablet available over the counter. However if relief does not occur within a reasonable time it is better to visit a doctor.
When one feels mild fever, it is better to take the common and popular cold-headache-fever medicines available over the counter. One should avoid over exertion and take light foods and more liquid intake like warm coffee, tea etc. One should also check for any other accompanying symptoms like throat pain, body pain, stomach ache or disturbance etc. If possible, then visit a doctor after becoming better. One should tell the doctor what medicine one has taken for the headache/fever.
For mild fevers, light black coffee with jaggery (palm jaggery) and a little quantity of pepper powder can help. It is better to sip slowly in small quantities.
As a first aid to very high temperature, one can do wet sponging of limbs,forehead, face and back using ordinary cold water. Immediately one should visit a doctor.