in the summer its worse get burning feeling in armpits only ever started when shaved my arm pits few years ago but its really un

Since you are experiencing this in the summer, then it could be Heat Rash.

Heat rash is not a serious condition, and rarely requires any specific treatment.

However, if you have burning feeling, there are a number of steps, such as those that are listed below, which may help to ease your symptoms.

• Avoid excessive heat and humidity where possible. Try to spend some time in the shade, or try taking a small fan out with you. Being exposed to heat will only make you sweat more, and could make your rash worse.
• Wear loose cotton clothing. Avoid wearing synthetic fibers, such as nylon and polyester, because they trap heat more easily than natural fibers.
• Keep your skin cool. Taking a cool bath, or shower, will help prevent sweating and will also soothe your skin.
• Calamine lotion can be used if your skin feels sore and irritated. It will help cool and soothe your skin. You can buy it at most pharmacies.
• Hydrocortisone cream can be used if your rash feels particularly itchy and irritated. You can buy low-strength hydrocortisone cream from your local pharmacy. Always follow the instructions on the packet.