While one needs to examine the local area to make diagnosis, it appears to be fungal infection.
Or it could be viral infection
Due to hot humid climate of India, fungal infections recurr
Next Steps
please visit a Dermatologist and get treated.
do not neglect this.
Health Tips
cleaning the penis head every time at bathing and after passing urine is good way to prevent local accumulation.
eat curds every two three days to help colonise your gut with good bacteria. this can prevent recurrence too.