hi i am uploading photoes of my impatients plants...please tell me what happened to those....leaves become small....
Without more information on the growing conditions, watering and fertilizing maintenance, I will have to guess.
The most likely is nutrient deficiency. Good fertile planting soil, regular fertilization and good water management are essential.
If outdoors, your monsoon rains will leach nutrients quite readily, which need to be replenished. Use compost in your planting soil and a complete organic fertilizer if available. Water adequately during the dry season.