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Iam 30 years old. Please give some tips on how to keep my skin and hair safe dur­ing sum­mer, and ex­cess­sive itch­ing and sweat­ing at bay. Shanti Kr­ish­nan, Madu­rai

When an in­di­vid­ual is ex­posed to a high en­vi­ron­ment tem­per­a­ture, the sweat glands are stim­u­lated to se­crete sweat. The sweat cools the body sur­face by evap­o­ra­tion and helps main­tain the body tem­per­a­ture. How­ever, per­sis­tent sweat­ing for long pe­ri­ods of time re­sults in the de­vel­op­ment of a skin rash called prickly heat. The rash is ac­com­pa­nied by in­tense itch­ing on the body. Avoid­ance of di­rect sun ex­po­sure, fre­quent cold wa­ter baths, pow­der­ing the body and body folds with tal­cum pow­der and keep­ing one­self in a well-ven­ti­lated cool en­vi­ron­ment will help you beat the heat. Ex­ces­sive per­spi­ra­tion also causes the scalp to itch. The scalp should be cleansed with a good sham­poo to clear it of sweat, oil se­cre­tion, dust and dan­druff. Sham­poo­ing the scalp does not cause hair loss.

Dr Rui Fer­nan­dez, Der­ma­tol­o­gist

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